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The baitfish primer

A guide to identifying and protecting Ontario's baitfishes

by Becky Cudmore and Nicolas E. Mandrak

The baitfish primer

The baitfish primer (PDF, 14.6 MB)

Table of Contents

Species accounts

Herrings

Alewife

Alewife

(Alosa pseudoharengus)

Characteristics:

  1. very laterally compressed body
  2. belly with saw-toothed edge
  3. large eye
  4. large mouth
Size: 150 mm; 309 mm
Similar species: Gizzard Shad
Ontario distribution: introduced throughout the Great Lakes
Habitat: open water
Use as bait: introduced; illegal under the OFRs

Gizzard Shad

Gizzard Shad

(Dorosoma cepedianum)

Characteristics:

  1. very deep and laterally compressed body
  2. saw-toothed keel along belly
  3. very long last ray on dorsal fin
Size: 250 mm; 485 mm
Similar species: Alewife, juvenile Bighead and Silver Carp
Ontario distribution: Southern Ontario
Habitat: cool nearshore waters in the pelagic zone of the Great Lakes as well as turbid, vegetated tributaries
Use as bait: illegal under the OFRs

Carps and minnows

Blackchin Shiner

Blackchin Shiner

(Notropis heterodon)

Characteristics:

  1. upturned mouth
  2. black pigment on snout and chin
  3. scales darkly outlined
  4. black stripe along side has zig-zag appearance
Size: 60 mm; 72 mm
Similar species: Blacknose Shiner, Bridle Shiner, Pugnose Minnow, Pugnose Shiner
Ontario distribution: central and northern Ontario, limited in southern Ontario
Habitat: vegetated, nearshore areas of lakes and small rivers
Use as bait: occasionally sold mixed with other shiners; CAUTION: similar physical appearance with several at-risk fishes.

Blacknose Shiner

Blacknose Shiner

(Notropis heterolepis)

Characteristics:

  1. black stripe around snout, barely onto upper lip and not on chin
  2. black crescents within stripe along side
  3. scales darkly outlined except above dark stripe along silver side
Size: 65 mm; 95 mm
Similar species: Blackchin Shiner, Bridle Shiner, Pugnose Minnow, Pugnose Shiner
Ontario distribution: central and northern Ontario, limited in southern Ontario
Habitat: cool, clear, weedy streams and shallow bays of lakes with sand or gravel bottom
Use as bait: sold mixed with other shiners; CAUTION: similar physical appearance with several at-risk fishes.

Bridle Shiner

Bridle Shiner

(Notropis bifrenatus)

Characteristics:

  1. small, upturned mouth
  2. brown-black stripe along side and around snout
  3. scales darkly outlined
  4. usually black spot at base of caudal fin
Size: 50 mm; 55 mm
Similar species: Blackchin Shiner, Blacknose Shiner, Pugnose Minnow, Pugnose Shiner
Ontario distribution: southeastern Ontario
Habitat: clear, still, shallow streams, ponds or lakes with submerged aquatic vegetation and bottom is mud, silt, or sand
Use as bait: illegal under the OFRs; listed as Special Concern under SARA and ESA

Pugnose Minnow

Pugnose Minnow

(Opsopoeodus emiliae)

Characteristics:

  1. small, strongly upturned mouth
  2. two very dark areas (front and rear) on dorsal fin in breeding males
Size: 50 mm; 57 mm
Similar species: Blackchin Shiner, Blacknose Shiner, Bridle Shiner, Pugnose Shiner
Ontario distribution: southwestern Ontario
Habitat: slow moving waters of turbid small to large streams
Use as bait: illegal under OFRs; listed as Special Concern under SARA and Threatened under ESA.

Pugnose Shiner

Pugnose Shiner

(Notropis anogenus)

Characteristics:

  1. very small, upturned mouth
  2. black pigment on chin, lower lip, side of upper lip
  3. scales darkly outlined
  4. dark stripe along side
Size: 50 mm; 56 mm
Similar species: Blackchin Shiner, Blacknose Shiner, Bridle Shiner, Pugnose Minnow
Ontario distribution: isolated populations in southwestern Ontario and the St. Lawrence River
Habitat: clear, heavily vegetated lakes, and pools of vegetated streams and rivers with clean sand or mud bottoms
Use as bait: illegal under the OFRs; listed as Endangered under SARA and Threatened under ESA.

Blacknose Dace

Blacknose Dace

(Rhinichthys atratulus)

Characteristics:

  1. thin barbel in corner of mouth
  2. no groove separating snout from upper lip
  3. pointed snout slightly overhangs mouth
  4. stripe along side, through eye and onto snout
Size: 80 mm; 100 mm
Similar species: Longnose Dace
Ontario distribution: widespread
Habitat: small, cool, clear, fast streams with rocky or gravelly substrate
Use as bait: used to a limited extent in Ontario; considered a relatively hardy species

Longnose Dace

Longnose Dace

(Rhinichthys cataractae)

Characteristics:

  1. thin barbel in corner of mouth
  2. no groove separating snout from upper lip
  3. long, fleshy snout extends beyond mouth
Size: 75 mm; 152 mm
Similar species: Blacknose Dace
Ontario distribution: widespread
Habitat: clean, swift streams with gravel beds, occasionally taken in inshore waters of lakes
Use as bait: not commonly used, possibly because of its drab colouration and its intolerance of the still water of bait buckets

Longnose Dace

Bluntnose Minnow

(Pimephales notatus)

Characteristics:

  1. crowded scales between head and dorsal fin
  2. blunt snout overhanging small mouth
  3. scales darkly outlined (often with cross-hatched appearance)
  4. conspicuous black spot on caudal fin base
Size: 65 mm; 101 mm
Similar species: Fathead Minnow
Ontario distribution: widespread
Habitat: main river channels over substrate of silt, sand, gravel or rocks; avoids heavy vegetation
Use as bait: not a popular species as it does not withstand crowding in a bait bucket as well as other species

Fathead Minnow

Fathead Minnow

(Pimephales promelas)

Characteristics:

  1. crowded scales between head and dorsal fin
  2. blunt snout with slanted mouth
  3. head short, flat on top
Size: 50 mm; 100 mm
Similar species: Bluntnose Minnow
Ontario distribution: widespread
Habitat: found in a wide range of habitats, but generally prefers still waters
Use as bait: angler preference varies locally; transports and holds well in commercial tanks and bait buckets

Brassy Minnow

Brassy Minnow

(Hybognathus hankinsoni)

Characteristics:

  1. brassy-yellow body
  2. diffuse dusky stripe, developed on rear half of side
Size: 65 mm; 96 mm
Similar species: Eastern Silvery Minnow
Ontario distribution: widespread in southern and northwestern Ontario
Habitat: small, sluggish weedy streams with sand, gravel or mud bottom covered by organic sediment; also common in silt-bottomed, shallow bog ponds, streams and lakes
Use as bait: not commonly used

Eastern Silvery Minnow

Eastern Silvery Minnow

(Hybognathus regius)

Characteristics:

  1. small, slightly subterminal mouth, rounded snout
  2. body deepest and widest in front of dorsal fin
Size: 75 mm; 108 mm
Similar species: Brassy Minnow
Ontario distribution: southeastern Ontario
Habitat: pools and backwaters of medium to large-sized streams with sandy bottoms
Use as bait: illegal under the OFRs

Central Stoneroller

Central Stoneroller

(Campostoma anomalum)

Characteristics:

  1. hard ridge along edge of lower jaw
  2. some speckling on sides
Size: 100 mm; 150 mm
Similar species: none
Ontario distribution: southwestern Ontario, introduced in other parts of southern Ontario
Habitat: small- to medium-sized streams with moderate, sometimes fast current and gravel to rock bottoms with attached filamentous algae
Use as bait: occasionally used, becoming more common

Common Shiner

Common Shiner

(Luxilus cornutus)

Characteristics:

  1. large scales, much deeper than wide
  2. dark stripe along middle of back
  3. crowded scales between head and dorsal fin
Size: 90 mm; 180 mm
Similar species: Striped Shiner
Ontario distribution: widespread
Habitat: small- to medium-sized weedless streams with gravel to rubble bottom, and nearshore of lakes
Use as bait: commonly used as a bait species - its large size and silvery appearance make it particularly attractive; transports and holds well in commercial tanks but does not live long in bait buckets

Striped Shiner

Striped Shiner

(Luxilus chrysocephalus)

Characteristics:

  1. large scales, much deeper than wide
  2. relatively deep body
  3. dark stripes on upper sides meet at middle of back behind dorsal fin to form large V’s
  4. scales between head and dorsal fin not crowded
Size: 80 mm; 238 mm
Similar species: Common Shiner
Ontario distribution: southwestern Ontario
Habitat: weedless, medium-sized streams with alternating pools and riffles over a gravel or rubble bottom, often with some silt
Use as bait: not known

Creek Chub

Creek Chub

(Semotilus atromaculatus)

Characteristics:

  1. large black spot at front of dorsal fin base
  2. black caudal spot (not obvious in large individuals)
  3. black stripe along side around snout and onto upper lip
Size: 100 mm; 294 mm
Similar species: Fallfish, Hornyhead Chub, Lake Chub, River Chub
Ontario distribution: widespread
Habitat: small, clear, streams; nearshore of small lakes
Use as bait: one of the most important bait minnows as it is hardy, grows to a large size, and can be readily caught in most streams

Fallfish

Fallfish

(Semotilus corporalis)

Characteristics:

  1. small, thick barbel in groove above corner of mouth
  2. scales on back and upper side darkly outlined
Size: 200 mm; 470 mm
Similar species: Creek Chub, Hornyhead Chub, Lake Chub, River Chub
Ontario distribution: eastern Ontario
Habitat: clear, flowing, gravel-bottomed streams, and lakes
Use as bait: limited use

Hornyhead Chub

Hornyhead Chub

(Nocomis biguttatus)

Characteristics:

  1. thin barbel at corner of large mouth
  2. large, dark-edged scales
  3. spot on base of tail
Size: 90 mm; 160 mm
Similar species: Creek Chub, Fallfish, Lake Chub, River Chub
Ontario distribution: southwestern Ontario, introduced elsewhere
Habitat: small- to medium-sized clear streams with gravel bottoms
Use as bait: not important as a bait species in Ontario, probably due to limited distribution and may not be distinguished from the more common Creek Chub; highly regarded in the northern US, especially for Northern Pike; attains large size, is hardy, and can withstand handling in commercial storage tanks and bait buckets

River Chub

River Chub

(Nocomis micropogon)

Characteristics:

  1. thin barbel at corner of large mouth
  2. large, dark-edged scales
  3. no spot on tail
Size: 100 mm; 239 mm
Similar species: Creek Chub, Fallfish, Hornyhead Chub, Lake Chub
Ontario distribution: southwestern Ontario, introduced elsewhere
Habitat: medium-sized streams with gravel to boulder substrates
Use as bait: when used as a baitfish, it may not be distinguished from the more common Creek Chub

Lake Chub

Lake Chub

(Couesius plumbeus)

Characteristics:

  1. thin barbel at corner of large mouth
  2. large pectoral fins
  3. lead-coloured sides and back
Size: 100 mm; 207 mm
Similar species: Creek Chub, Fallfish, Hornyhead Chub, River Chub
Ontario distribution: widespread
Habitat: gravel-bottomed pools and runs of streams, lakes
Use as bait: limited use as live bait in Lake Trout fishing in the vicinity of Rossport, Lake Superior; spring spawning runs fished by bait harvesters for Walleye bait

Cutlip Minnow

Cutlip Minnow

(Exoglossum maxillingua)

Characteristics:

  1. fleshy lobe on each side of lower jaw
Size: 100 mm; 140 mm
Similar species: none
Ontario distribution: southeastern Ontario
Habitat: warm, clear, gravelly streams and rivers relatively free of vegetation and silt; dwells mostly under stones in quiet pools
Use as bait: illegal under the OFRs; listed as Threatened under ESA.

Emerald Shiner

Emerald Shiner

(Notropis atherinoides)

Characteristics:

  1. slender, elongate body
  2. large mouth on fairly pointed snout
  3. dorsal fin origin behind pelvic fin origin
  4. black lips (front half)
Size: 75 mm; 124 mm
Similar species: Rosyface Shiner, Silver Shiner
Ontario distribution: widespread
Habitat: common in large rivers and lakes
Use as bait: very popular baitfish, particularly for ice fishing; most important commercial baitfish in Ontario; CAUTION: similar appearance to at-risk Silver Shiner

Rosyface Shiner

Rosyface Shiner

(Notropis rubellus)

Characteristics:

  1. slender, elongate body
  2. large mouth on sharply pointed long snouth
  3. dorsal fin origin well behind pelvic fin origin
  4. faint red at base of dorsal fin
Size: 65 mm; 87 mm
Similar species: Emerald Shiner, Silver Shiner
Ontario distribution: southern Ontario
Habitat: clear, fast-flowing small- to medium-sized streams with bottoms of fine gravel or rubble, usually in or around riffles
Use as bait: not readily kept in commercial tanks

Silver Shiner

Silver Shiner

(Notropis photogenis)

Characteristics:

  1. slender, elongate body
  2. large mouth on long snout
  3. dorsal fin origin over pelvic fin
  4. two black crescents between nostrils
Size: 100 mm; 138 mm
Similar species: Emerald Shiner, Rosyface Shiner
Ontario distribution: isolated populations in southwestern Ontario
Habitat: clear, weedless medium- to large-sized streams with clean gravel or boulder bottoms, usually in riffles and runs
Use as bait: illegal under the OFRs; listed as Special Concern under SARA and Threatened under ESA.

Finescale Dace

Finescale Dace

(Chrosomus neogaeus)

Characteristics:

  1. very small scales
  2. large mouth extending to under eye
  3. single black stripe along side
Size: 75 mm; 106 mm
Similar species: Northern Redbelly Dace, Pearl Dace
Ontario distribution: central and northern Ontario, limited in southern Ontario
Habitat: tea-stained, cool, small, boggy streams and lakes usually over silt and near vegetation; often common in beaver ponds
Use as bait: widely distributed and often abundant baitfish

Redbelly Dace

Northern Redbelly Dace

(Chrosomus eos)

Characteristics:

  1. very small scales
  2. small mouth
  3. two black stripes along side
Size: 55 mm; 80 mm
Similar species: Finescale Dace, Pearl Dace
Ontario distribution: widespread in central and northern Ontario, limited in southern Ontario
Habitat: boggy streams, ponds and small lakes over a bottom of organic muck and vegetation
Use as bait: generally considered too small for a bait minnow but is hardy and readily available in less populated areas of Ontario, where it is used for bait

Northern Pearl Dace

Northern Pearl Dace

(Margariscus nachtriebi)

Characteristics:

  1. very small scales
  2. small mouth
  3. barbel in groove above lip (often missing on one or both sides)
  4. many small black and brown specks on silver side
Size: 90 mm; 160 mm
Similar species: Finescale Dace, Northern Redbelly Dace
Ontario distribution: widespread
Habitat: boggy streams, ponds, and small lakes with sand or gravel bottoms
Use as bait: in many areas it is an important bait minnow, but is usually unrecognized and included with other species sold as chub or dace

Ghost Shiner

Ghost Shiner

(Notropis buchanani)

Characteristics:

  1. body translucent milky white overall in colour
Size: 55 mm; 58 mm
Similar species: Mimic Shiner, Sand Shiner, River Shiner
Ontario distribution: southwestern Ontario
Habitat: quiet waters of large streams and lakes with clean sand, gravel bottoms and some aquatic vegetation
Use as bait: illegal under the OFRs

Mimic Shiner

Mimic Shiner

(Notropis volucellus)

Characteristics:

  1. lateral band weakly pigmented
  2. black pigment surrounding anus
Size: 60 mm; 81 mm
Similar species: Ghost Shiner, Sand Shiner, River Shiner
Ontario distribution: widespread
Habitat: quiet or still waters of streams and lakes
Use as bait: common; usually captured incidentally while harvesting other baitfishes, such as Emerald Shiner; CAUTION: similar in appearance to illegal Ghost Shiner

River Shiner

River Shiner

(Notropis blennius)

Characteristics:

  1. Rounded snout overhangs mouth
  2. Uniform dark stripe along back
  3. Dorsal fin origin directly over pelvic fin origin
  4. Mostly silvery with small dark pigment on sides
Size: 89 mm; 97 mm
Similar species: Ghost Shiner, Mimic Shiner, Sand Shiner
Ontario distribution: northwestern Ontario, Rainy River and Lake-of-the-Woods
Habitat: pools and main channels of medium to large rivers, low to moderate velocities, silt and gravel substrates
Use as bait: illegal under the OFRs

Sand Shiner

Sand Shiner

(Notropis stramineus)

Characteristics:

  1. lateral band weakly pigmented
  2. no black pigment surrounding anus
Size: 65 mm; 85 mm
Similar species: Ghost Shiner, Mimic Shiner, River Shiner
Ontario distribution: southern Ontario
Habitat: sandy shallows of small- to large-sized rivers and lakes with some rooted aquatic plants
Use as bait: transports and holds well in commercial tanks, can withstand low oxygen conditions; CAUTION: similar in appearance to illegal Ghost Shiner

Golden Shiner

Golden Shiner

(Notemigonus crysoleucas)

Characteristics:

  1. small, upturned mouth
  2. deep-bodied but very thin
  3. scaleless keel along belly from pelvic to anal fin
Size: 100 mm; 230 mm
Similar species: Rudd
Ontario distribution: widespread
Habitat: clear, weedy, quiet waters of streams and lakes
Use as bait: one of the most popular of all baitfishes in North America (including Ontario); easily damaged by handling; CAUTION: very similar in appearance to illegal Rudd

Rudd

Rudd

(Scardinius erythrophthalmus)

Characteristics:

  1. small, upturned mouth
  2. deep-bodied but very thin
  3. scaled keel along belly from pelvic to anal fin
  4. bright red anal, pelvic and pectoral fins, red-brown dorsal and caudal fins
Size: 200 mm; 385 mm
Similar species: Golden Shiner
Ontario distribution: isolated introduced populations in southern Ontario
Habitat: clear, weedy, quiet waters of streams and lakes
Use as bait: illegal under the OFRs; invasive species

Redfin Shiner

Redfin Shiner

(Lythrurus umbratilis)

Characteristics:

  1. very small scales in front of dorsal fin
  2. dark spot at dorsal fin origin
Size: 65 mm; 73 mm
Similar species: Spotfin Shiner
Ontario distribution: southwestern Ontario
Habitat: quiet waters of creeks and small- to medium-sized rivers, with some vegetation
Use as bait: generally considered too small and uncommon in Ontario to be used as baitfish

Spotfin Shiner

Spotfin Shiner

(Cyprinella spiloptera)

Characteristics:

  1. scales on side diamond-shaped (taller than wide)
  2. dusky to black bar on chin
  3. black spot on rear half of dorsal fin
Size: 75 mm; 115 mm
Similar species: Redfin Shiner
Ontario distribution: southern Ontario
Habitat: medium- to large-sized unvegetated streams over sand, gravel, or rubble, often in somewhat turbid waters
Use as bait: can be used as a baitfish but of no real importance in Ontario due to limited distribution; not readily kept in tanks

Silver Chub

Silver Chub

(Macrhybopsis storeriana)

Characteristics:

  1. rounded snout overhanging mouth
  2. barbel in corner of mouth
  3. no spot on caudal peduncle
Size: 120 mm; 225 mm
Similar species: Spottail Shiner
Ontario distribution: Lake Erie, Lake St. Clair
Habitat: shallow areas of Lake Erie and Lake St. Clair
Use as bait: illegal under the OFRs; listed as Threatened under ESA.

Spottail Shiner

Spottail Shiner

(Notropis hudsonius)

Characteristics:

  1. rounded snout overhanging mouth
  2. no barbel
  3. large black caudal spot
Size: 70 mm; 142 mm
Similar species: Silver Chub
Ontario distribution: widespread
Habitat: large streams and lakes, usually over sandy or rocky shallows with sparse vegetation
Use as bait: most frequently used bait minnow in many parts of northern and eastern Ontario

Common Carp

Common Carp

(Cyprinus carpio)

Characteristics:

  1. large scales
  2. deep, thick body, strongly arched to dorsal fin, flattened behind
  3. saw-toothed spine at front of dorsal, pectoral and anal fins
  4. two barbels on each side of upper jaw
Size: 370 mm; 991 mm
Similar species: Goldfish, Grass Carp, Tench
Ontario distribution: introduced throughout southern Ontario, isolated populations in northern Ontario
Habitat: wide variety of habitats, in small- to large-sized streams, nearshore of lakes over all types of substrates
Use as bait: illegal under the OFRs; introduced

Goldfish

Goldfish

(Carassius auratus)

Characteristics:

  1. Large scales
  2. deep, thick body, strongly arched to dorsal fin
  3. saw-toothed spine at front of dorsal, pectoral and anal fins
  4. no barbels
Size: 190 mm; 393 mm
Similar species: Common Carp, Tench
Ontario distribution: introduced throughout southwestern Ontario, isolated populations elsewhere.
Habitat: wide variety of habitats, in small to large streams, nearshore of lakes over all types of substrates
Use as bait: illegal under the OFRs; introduced

Tench

Tench

(Tinca tinca)

Characteristics:

  1. very small scales
  2. one barbel on each side of upper jaw
Size: 250 mm; 500 mm
Similar species: Common Carp, Goldfish, Lake Chubsucker
Ontario distribution: potential invader
Habitat: shallow, muddy vegetated ponds, lakes, and streams
Use as bait: illegal under the OFRs

Bighead Carp

Bighead Carp

(Hypophthalmichthys nobilis)

Characteristics:

  1. eye sits below the mouth
  2. small scales with dark blotches
  3. no barbels
  4. no long last ray on dorsal fin
Size: to 1500 mm
Similar species: Silver Carp, Gizzard Shad
Ontario distribution: potential invader
Habitat: wide variety of habitats in large streams and lakes
Use as bait: illegal under the OFRs, ISA, and federal AIS regulations

Black Carp

Black Carp

(Mylopharyngodon piceus)

Characteristics:

  1. large scales
  2. thick body, not deep
  3. large, dark-edged scales
  4. no spines on dorsal, pectoral and anal fins
  5. no barbels
Size: to 1500 mm
Similar species: Grass Carp, Goldfish, Tench
Ontario distribution: potential invader
Habitat: wide variety of habitats in large streams and lakes
Use as bait: illegal under the OFRs, ISA, and federal AIS regulations

Grass Carp

Grass Carp

(Ctenopharyngodon idella)

Characteristics:

  1. large scales
  2. thick body, not deep
  3. large, dark-edged scales
  4. no spines on dorsal, pectoral and anal fins
  5. no barbels
Size: to 1500mm
Similar species: Black Carp, Common Carp, Goldfish, Tench, Fallfish
Ontario distribution: isolated individuals introduced in southern Ontario
Habitat: wide variety of habitats, large streams and nearshore of lakes, typically with aquatic vegetation
Use as bait: invasive; illegal under the OFRs, ISA, and federal AIS regulations

Silver Carp

Silver Carp

(Hypophthalmichthys molitrix)

Characteristics:

  1. eye sits below the mouth
  2. small, shiny scales
  3. no barbels
  4. no long last ray on dorsal fin
Size: to 1500 mm
Similar species: Bighead Carp, Gizzard Shad
Ontario distribution: potential invader
Habitat: wide variety of habitats in large streams and lakes
Use as bait: illegal under the OFRs, ISA, and federal AIS regulations

Gravel Chub

Gravel Chub

(Erimystax x-punctatus)

Characteristics:

  1. small, thin barbel in corner of mouth
  2. many dark X’s on back and side
Size: 75 mm; 94 mm
Similar species: Creek Chub, Fallfish, Hornyhead Chub, Lake Chub, River Chub
Ontario distribution: only known from the Thames River in the 1950’s
Habitat: gravel-bottomed small- to large-sized streams, preferably slow moving and deep
Use as bait: illegal under the OFRs; listed as Extirpated under SARA and ESA.

Redside Dace

Redside Dace

(Clinostomus elongatus)

Characteristics:

  1. long pointed snout, with very large mouth
  2. bright red stripe on lower side
Size: 75 mm; 107 mm
Similar species: Finescale Dace, Northern Redbelly Dace, Pearl Dace
Ontario distribution: isolated populations throughout southern Ontario
Habitat: clear, cool, flowing streams over rubble or gravel substrate
Use as bait: illegal under the OFRs; listed as Endangered under ESA and SARA.

Suckers and redhorses

Longnose Sucker

Longnose Sucker

(Catostomus catostomus)

Characteristics:

  1. thick lips with many ‘pimples’
  2. very small scales
Size: 335 mm; 600 mm
Similar species: Northern Hog Sucker, White Sucker
Ontario distribution: Great Lakes, central and northern Ontario
Habitat: cold, deep lakes
Use as bait: only incidental, caught rarely with small White Suckers

Northern Hog Sucker

Northern Hog Sucker

(Hypentelium nigricans)

Characteristics:

  1. thick lips with ‘pimples’
  2. large scales
  3. large, rectangular head, broadly flat (young) or concave (adult) between eyes
  4. three to six dusky-brown saddles on upper side
Size: 90 mm; 370 mm
Similar species: Longnose Sucker, White Sucker
Ontario distribution: southwestern Ontario
Habitat: riffles and adjacent pools of clear shallow streams with gravel to rubble substrates; found infrequently in shallow lakes near the mouths of streams
Use as bait: limited, sometimes sold as “pike” bait

White Sucker

White Sucker

(Catostomus commersonii)

Characteristics:

  1. thick lips (lower lip about twice as thick as upper lip) with many “pimples”
  2. small scales
Size: 410 mm; 579 mm
Similar species: Longnose Sucker, Northern Hog Sucker
Ontario distribution: widespread
Habitat: found in a wide range of habitats
Use as bait: widespread; often sold as “pike” bait

Lake Chubsucker

Lake Chubsucker

(Erimyzon sucetta)

Characteristics:

  1. thin lips with grooves on small, slightly upturned mouth
  2. deep body
  3. rounded edge on dorsal fin
  4. no barbels
Size: 200 mm; 280 mm
Similar species: other suckers; Tench
Ontario distribution: southwestern Ontario
Habitat: shallow, clear, vegetated ponds and lakes over silt, sand or debris; rarely in streams
Use as bait: illegal under the OFRs; listed as Threatened under ESA and Endangered under SARA

Black Redhorse

Black Redhorse

(Moxostoma duquesnei)

Characteristics:

  1. mouth under snout has thick lips with grooves
  2. large scales
  3. gray caudal fin
  4. concave dorsal fin
  5. lower lip not notched
Size: 400 mm; 534 mm
Similar species: Golden Redhorse, Greater Redhorse, River Redhorse, Shorthead Redhorse, Silver Redhorse, White Sucker
Ontario distribution: southwestern Ontario
Habitat: pools in the swifter flowing medium-to-large rivers
Use as bait: illegal under the OFRs; listed as Threatened under ESA.

Golden Redhorse

Golden Redhorse

(Moxostoma erythrurum)

Characteristics:

  1. large scales
  2. gray caudal fin
  3. concave dorsal fin
  4. lower lip notched
Size: 370 mm; 495 mm
Similar species: Black Redhorse, Greater Redhorse, River Redhorse, Shorthead Redhorse, Silver Redhorse, White Sucker
Ontario distribution: southwestern Ontario
Habitat: clear, small- to large-sized streams in riffles over variety of substrates
Use as bait: illegal under the OFRs

Greater Redhorse

Greater Redhorse

(Moxostoma valenciennesi)

Characteristics:

  1. thick lips with grooves
  2. large scales
  3. red caudal fin
  4. concave dorsal fin
  5. grooves on lower lip are parallel
Size: 410 mm; 688 mm
Similar species: Black Redhorse, Golden Redhorse, River Redhorse, Shorthead Redhorse, Silver Redhorse, White Sucker
Ontario distribution: southern Ontario
Habitat: large streams in riffles with bottoms of clean sand, gravel or boulders
Use as bait: illegal under the OFRs

River Redhorse

River Redhorse

(Moxostoma carinatum)

Characteristics:

  1. mouth under snout has thick lips with grooves
  2. large scales
  3. red caudal fin
  4. dorsal fin edge usually straight
  5. grooves on lower lip are parallel
Size: 450 mm; 798 mm
Similar species: isolated populations in southern Ontario
Ontario distribution: Black, Golden, Greater, Shorthead, and Silver Redhorses; White Sucker
Habitat: rocky pools and swift runs of small-to-large sized streams ; impoundments
Use as bait: illegal under the OFRs; listed as Special Concern under SARA and ESA.

Shorthead Redhorse

Shorthead Redhorse

(Moxostoma macrolepidotum)

Characteristics:

  1. thick lips with grooves
  2. large scales
  3. red caudal fin
  4. concave dorsal fin
  5. lower lip notched
Size: 410 mm; 615 mm
Similar species: Black, Golden, Greater, River, and Silver Redhorses; White Sucker
Ontario distribution: widespread
Habitat: lakes and streams over bottoms of sand or gravel without heavy silt
Use as bait: CAUTION: redhorse species (including species at risk) are very difficult to distinguish from one another

Silver Redhorse

Silver Redhorse

(Moxostoma anisurum)

Characteristics:

  1. thick lips with grooves or pimples on mouth under snout
  2. large scales
  3. gray caudal fin
  4. convex dorsal fin
  5. lower lip notched
Size: 400 mm; 686 mm
Similar species: Black, Golden, Greater, River, and Shorthead Redhorses; White Sucker
Ontario distribution: widespread
Habitat: mud- to rock bottomed pools and runs of small- to large-sized streams; occasionally lakes
Use as bait: CAUTION: redhorse species (including species at risk) are very difficult to distinguish from one another

Spotted Sucker

Spotted Sucker

(Minytrema melanops)

Characteristics:

  1. thin lips with grooves
  2. small scales
  3. rows of dark spots at scale bases on back and side
Size: 255 mm; 510 mm
Similar species: other suckers
Ontario distribution: southwestern Ontario
Habitat: creeks and small rivers with sandy, gravelly, or hard clay bottoms without silt, but occasionally in large rivers and impoundments
Use as bait: illegal under the OFRs; listed as Special Concern under SARA and ESA.

Mudminnows

Central Mudminnow

Central Mudminnow

(Umbra limi)

Characteristics:

  1. dorsal and anal fins far back on body
  2. black bar on caudal fin base
  3. rounded caudal fin
Size: 75 mm; 140 mm
Similar species: Blackstripe Topminnow; Banded Killifish
Ontario distribution: southern Ontario
Habitat: still, mud-bottomed, often heavily vegetated streams and ponds
Use as bait: sold and used as bait, hardy (capable of breathing air)

Smelts

Rainbow Smelt

Rainbow Smelt

(Osmerus mordax)

Characteristics:

  1. streamlined, elongate body
  2. adipose fin
  3. large teeth on jaw and tongue
Size: 190 mm; 273 mm
Similar species: Cisco species (illegal baitfish, most at risk; most not included in this Primer)
Ontario distribution: native to Ottawa Valley in Ontario, widely introduced elsewhere
Habitat: open waters of lakes
Use as bait: introduced; illegal under the OFRs

Salmon, trouts and whitefishes

Cisco

Cisco

(Coregonus artedi)

Characteristics:

  1. streamlined, elongate body
  2. adipose fin
  3. no teeth
Size: 250 mm; 597 mm
Similar species: Rainbow Smelt; other Cisco species (illegal baitfishes, most at risk; not included in this Primer)
Ontario distribution: Great Lakes, central and northern Ontario
Habitat: primarily found in opens waters of lakes but may occur in large streams
Use as bait: popular in some areas for use as bait for Lake Trout and salmon; CAUTION: similar in appearance to illegal Rainbow Smelt and other at-risk cisco species

New world silversides

Brookside Silverside

Brookside Silverside

(Labidesthes sicculus)

Characteristics:

  1. small upturned mouth
  2. two dorsal fins
  3. long anal fin
Size: 75 mm; 108 mm
Similar species: Emerald Shiner, Rainbow Smelt, Silver Shiner
Ontario distribution: southern Ontario
Habitat: warm surface waters of clear streams and nearshores of lakes
Use as bait: illegal under the OFRs

Topminnows

Banded Killifish

Banded Killifish

(Fundulus diaphanus)

Characteristics:

  1. small upturned mouth
  2. 12-20 vertical bars
Size: 70 mm; 99 mm
Similar species: Blackstripe Topminnow; Central Mudminnow
Ontario distribution: southern and northwestern Ontario
Habitat: warm surface waters of clear streams and nearshores of lakes
Use as bait: illegal under the OFRs

Blackstripe Topminnow

Blackstripe Topminnow

(Fundulus notatus)

Characteristics:

  1. small upturned mouth
  2. dark lateral stripe along side
Size: 50 mm; 67 mm
Similar species: Banded Killifish; Central Mudminnow
Ontario distribution: southwestern Ontario
Habitat: warm surface waters of small streams
Use as bait: illegal under the OFRs; listed as Special Concern under SARA and ESA.

Trout-perches

Trout-Perch

Trout-Perch

(Percopsis omiscomaycus)

Characteristics:

  1. large, unscaled head
  2. adipose fin
  3. spines in dorsal, anal and pelvic fins
  4. rows of 7-12 dusky spots along back, upper side and side
Size: 90 mm; 150 mm
Similar species: none
Ontario distribution: widespread
Habitat: lakes or deep flowing pools of small- to large-sized streams, usually over sand
Use as bait: incidental capture and sold with mixed species

Sticklebacks

Brook Stickleback

Brook Stickleback

(Culaea inconstans)

Characteristics:

  1. 4-7 (usually 5) short dorsal spines
  2. deep, thin body with no bony plates on side
Size: 50 mm; 87 mm
Similar species: Fourspine, Ninespine and Threespine sticklebacks
Ontario distribution: widespread
Habitat: quiet, vegetated waters of small rivers, ponds or lakes over sand, muck or mud
Use as bait: only incidental; CAUTION: similar in appearance to illegal Fourspine Stickleback

Fourspine Stickleback

Fourspine Stickleback

(Apeltes quadracus)

Characteristics:

  1. four dorsal spines of various lengths, wide gap before last spine
  2. no bony plates on side
Size: 45 mm; 53 mm
Similar species: Brook, Ninespine, and Threespine sticklebacks
Ontario distribution: introduced into northwestern Lake Superior
Habitat: quiet, vegetated waters
Use as bait: introduced; illegal under the OFRs

Ninespine Stickleback

Ninespine Stickleback

(Pungitius pungitius)

Characteristics:

  1. nine short dorsal spines
  2. slender body
  3. well-developed keel on caudal peduncle
  4. no bony plates on side
Size: 65 mm; 89 mm
Similar species: Brook, Fourspine, and Threespine sticklebacks
Ontario distribution: widespread in northern Ontario, the Great Lakes
Habitat: shallow, vegetated areas of streams, ponds or lakes; deep waters of Great Lakes
Use as bait: only incidental

Threespine Stickleback

Threespine Stickleback

(Gasterosteus aculeatus)

Characteristics:

  1. three dorsal spines, last very short
  2. bony plates on side
  3. bony keel along side of caudal peduncle
Size: 50 mm; 75 mm
Similar species: Brook, Fourspine, and Ninespine sticklebacks
Ontario distribution: isolated populations mainly in central and eastern Ontario
Habitat: shallow areas over mud or sand with vegetation
Use as bait: incidental; CAUTION: has been introduced in some parts of Ontario

Sculpins

Mottled Sculpin

Mottled Sculpin

(Cottus bairdii)

Characteristics:

  1. dorsal fins joined at base
  2. 2-3 dark bars on body under second dorsal fin
  3. large black spots at front and rear of first dorsal fin
Size: 75 mm; 133 mm
Similar species: Slimy Sculpin, Round Goby and Tubenose Goby (Spoonhead and Deepwater sculpins look similar but, due to their deepwater habitats, they are not included in this Primer)
Ontario distribution: widespread
Habitat: riffles of small streams and headwaters over rubble or gravel; rocky shores of lakes
Use as bait: limited; CAUTION: easily confused with illegal gobies

Slimy Sculpin

Slimy Sculpin

(Cottus cognatus)

Characteristics:

  1. long, fairly slender body
  2. three pelvic rays
  3. prickles on head and behind pectoral fin base
Size: 75 mm; 115 mm
Similar species: Mottled Sculpin, Round Goby and Tubenose Goby (Spoonhead and Deepwater sculpins look similar but, due to their deepwater habitats, they are not included in this Primer)
Ontario distribution: widespread
Habitat: rocky areas of cold streams and lakes
Use as bait: limited; CAUTION: easily confused with illegal gobies

Perches and darters

Blackside Darter

Blackside Darter

(Percina maculata)

Characteristics:

  1. slender, elongate body
  2. large mouth
  3. 6-9 large oval black blotches along side
  4. black caudal spot
Size: 60 mm; 99 mm
Similar species: Logperch
Ontario distribution: southwestern Ontario
Habitat: riffles and pools of medium-sized streams over gravel and sand with an abundance of vegetation
Use as bait: only incidental

Channel Darter

Channel Darter

(Percina copelandi)

Characteristics:

  1. slender, elgonated body
  2. blunt snout
  3. 9-10 horizontally oblong black blotches along side
  4. black X’s and W’s on back and upper side
Size: 45 mm; 73 mm
Similar species: River Darter
Ontario distribution: isolated populations in southern Ontario
Habitat: pools and margins of riffles of small- to medium-sized streams usually over sand and gravel; shores of lakes
Use as bait: illegal under the OFRs; listed as Threatened under SARA and ESA.

Logperch

Logperch

(Percina caprodes)

Characteristics:

  1. slender, elongate body
  2. large mouth
  3. dusky tear drop
  4. many alternating long and short bars along side
Size: 90 mm; 180 mm
Similar species: Blackside Darter
Ontario distribution: widespread
Habitat: medium to large streams, rivers and lakes over sand and gravel bottoms
Use as bait: occasionally used as live bait but cannot be held long in a bait bucket

River Darter

River Darter

(Percina shumardi)

Characteristics:

  1. slender, elongate body
  2. large mouth
  3. black teardrop
  4. 8-15 black bars along side
  5. small black spot at front, large black spot near rear of first dorsal fin
Size: 50 mm; 76 mm
Similar species: Channel Darter
Ontario distribution: widespread in northwestern Ontario, isolated populations in southwestern Ontario
Habitat: medium- to large-sized streams with strong, deep current over sand, gravel or rock
Use as bait: CAUTION: the southwestern Ontario population has been recently assessed by COSEWIC and COSSARO as Endangered and is pending listing under SARA and ESA; only be used as bait in northwestern Ontario

Fantail Darter

Fantail Darter

(Etheostoma flabellare)

Characteristics:

  1. slender, elongate body
  2. small mouth
  3. black bands on second dorsal fin and caudal fin
  4. gold knobs on tips of dorsal spines
Size: 50 mm; 82 mm
Similar species: Greenside Darter, Iowa Darter, Johnny Darter, Least Darter, Rainbow Darter, Tessellated Darter
Ontario distribution: southwestern Ontario
Habitat: gravel- and boulder-bottomed streams of slow to moderate flow
Use as bait: only incidental

Greenside Darter

Greenside Darter

(Etheostoma blennioides)

Characteristics:

  1. slender, elongate body
  2. small mouth
  3. dusky teardrop
  4. 5-18 green W’s, V’s, or bars on side
Size: 75 mm; 100 mm
Similar species: Fantail Darter, Iowa Darter, Johnny Darter, Least Darter, Rainbow Darter, Tessellated Darter
Ontario distribution: isolated populations in southwestern Ontario
Habitat: small- to large-sized streams among rubble and small boulders with attached filamentous algae
Use as bait: illegal under OFRs; introduced beyond native range

Iowa Darter

Iowa Darter

(Etheostoma exile)

Characteristics:

  1. slender, elgonated body
  2. small mouth
  3. black teardrop
  4. middle red band on first dorsal fin
Size: 50 mm; 72 mm
Similar species: Fantail Darter, Greenside Darter, Johnny Darter, Least Darter, Rainbow Darter, Tessellated Darter
Ontario distribution: widespread
Habitat: clear, standing, or slowly moving waters of streams, small to medium rivers and lakes with aquatic vegetation, and a bottom of organic debris and sand
Use as bait: only incidental

Johnny Darter

Johnny Darter

(Etheostoma nigrum)

Characteristics:

  1. slender, elongate body
  2. small mouth
  3. black teardrop
  4. dark brown X’s and W’s along side
Size: 50 mm; 72 mm
Similar species: Fantail Darter, Greenside Darter, Iowa Darter, Least Darter, Rainbow Darter, Tessellated Darter
Ontario distribution: widespread
Habitat: wide variety of aquatic habitats but most common in quieter waters over bottom of sand, gravel, silt, or a combination of these, but do inhabit weedy areas or gravel riffles of streams
Use as bait: only incidental

Least Darter

Least Darter

(Etheostoma microperca)

Characteristics:

  1. slender, elongate body
  2. small mouth
  3. large, black teardrop
  4. dark green saddles
Size: 25 mm; 42 mm
Similar species: Fantail Darter, Greenside Darter, Iowa Darter, Johnny Darter, Rainbow Darter, Tessellated Darter
Ontario distribution: southwestern Ontario, isolated populations in northern Ontario
Habitat: clear, quiet, weedy waters of lakes and slow-moving small- to medium-sized streams
Use as bait: likely none as a result of small size

Rainbow Darter

Rainbow Darter

(Etheostoma caeruleum)

Characteristics:

  1. relatively deep-bodied
  2. small mouth
  3. no teardrop
  4. 6-10 dark saddles
Size: 50 mm; 71 mm
Similar species: Fantail Darter, Greenside Darter, Iowa Darter, Johnny Darter, Least Darter, Tessellated Darter
Ontario distribution: southwestern Ontario
Habitat: fast-flowing gravel and rubble-bottomed riffles of small to medium streams
Use as bait: only incidental

Tesselated Darter

Tesselated Darter

(Etheostoma olmstedi)

Characteristics:

  1. slender, elongate body
  2. small mouth
  3. black teardrop
  4. dark brown X’s and W’s along side
  5. six dark brown saddles
Size: 55 mm; 81 mm
Similar species: Fantail Darter, Greenside Darter, Iowa Darter, Johnny Darter, Least Darter, Rainbow Darter
Ontario distribution: southeastern Ontario
Habitat: lakes and rivers over mud, sand or rock bottom
Use as bait: only incidental

Eastern Sand Darter

Eastern Sand Darter

(Ammocrypta pellucida)

Characteristics:

  1. slender, elongate, transparent body
  2. 10-19 horizontal dark green blotches along side
Size: 60 mm; 84 mm
Similar species: other darters
Ontario distribution: isolated populations in southwestern Ontario
Habitat: sand-bottomed areas of small to large streams and wave-protected beaches of large lakes
Use as bait: illegal under the OFRs; listed as Threatened under SARA and ESA.

Ruffe

Ruffe

(Gymnocephalus cernua)

Characteristics:

  1. fairly deep, compressed body
  2. broadly joined, spiny dorsal fins
  3. many small black spots on dorsal and caudal fins
Size: 110 mm; 180 mm
Similar species: Yellow Perch (not included in this Primer)
Ontario distribution: introduced into western Lake Superior
Habitat: lakes; quiet pools and margins of streams
Use as bait: illegal under the OFRs; invasive species

Gobies

Tubenose Goby

Tubenose Goby

(Proterorhinus semilunaris)

Characteristics:

  1. fused pelvic fins
  2. long anterior nostrils
  3. spiny dorsal fin with oblique black lines (no spot)
Size: 50 mm; 85 mm
Similar species: Round Goby, Mottled and Slimy Sculpins (Spoonhead and Deepwater sculpins - not included in this Primer)
Ontario distribution: isolated, introduced populations in southwestern Ontario and Lake Superior basin
Habitat: shallow, vegetated areas of lakes and streams
Use as bait: illegal under the OFRs; invasive species

Round Goby

Round Goby

(Neogobius melanostomus)

Characteristics:

  1. fused pelvic fins
  2. greenish, spiny dorsal fin with a black spot
Size: 75 mm; 244 mm
Similar species: Tubenose Goby, Mottled and Slimy sculpins (Spoonhead and Deepwater sculpins - not included in this Primer)
Ontario distribution: introduced populations in the Great Lakes and tributaries
Habitat: rocky or gravelly habitat, generally inhabit the nearshore area of lakes but will migrate to deeper water in winter; also found in tributaries
Use as bait: illegal under the OFRs; invasive species

Crayfishes

Rusty Crayfish

Rusty Crayfish

(Orconectes rusticus)

Characteristics:

  1. greenish coloured claws with dark black bands near the tips
  2. prominent rusty patches on either side of the carapace
Size: to 625 mm
Similar species: native crayfishes (not included in this Primer)
Ontario distribution: isolated, introduced in southern Ontario
Habitat: streams and lakes with adequate rock, log, and debris cover and substrates of clay, silt and gravel
Use as bait: CAUTION: overland transport is prohibited; crayfishes in general cannot be commercially harvested or sold; anglers can capture their own bait but must use it in the waterbody where it is captured

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