Identify an Aquatic Invasive Species

Do you think you have discovered an aquatic invasive species?

  1. Do not return the species to the water.
  2. Note the exact location (GPS coordinates) and the observation date.
  3. Take photos.
  4. Take note of identifying features.
  5. Report an Aquatic Invasive Species, depending on where you are.
  6. What you can do to reduce the risk.

Marine Invasive Species

Green Crab

European Green Crab
Carcinus maenas

Clubbed Tunicate

Clubbed Tunicate
Styela clava

Golden Star Tunicate

Golden Star Tunicate
Botryllus schlosseri

Vase Tunicate

Vase Tunicate
Ciona intestinalis

Didemnum

Pancake Batter Tunicate
Didemnum vexillum

Violet Tunicate

Violet Tunicate
Botrylloides violaceus

Coffin box

Coffin Box Bryozoan
Membranipora membranacea

European Sea Squirt

European Sea Squirt
Ascidiella aspersa

Diplosoma

Compound Sea Squirt
Diplosoma listerianum

Chinese Mitten Crab

Chinese Mitten Crab
Eriocheir sinensis

Oyster Thief

Oyster Thief
Codium fagile spp fragile

Japanese Skeleton Shrimp

Japanese Skeleton Shrimp
Caprella mutica

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Freshwater Invasive Species

Bighead Carp

Asian Carp - Bighead Carp
Hypophthalmichthys nobilis

Black Carp

Asian Carp - Black Carp
Mylopharyngodon piceus

Grass Carp

Asian Carp - Grass Carp
Ctenopharyngodon idella

Silver Carp

Asian Carp - Silver Carp
Hypophthalmichthys molitrix

Sea Lamprey

Sea Lamprey
Petromyzon marinus

Zebra Mussel

Zebra Mussel
Dreissena polymorpha

Quagga Mussel

Quagga Mussel
Dreissena bugensis

Smallmouth Bass

Smallmouth Bass
Micropterus dolomieu

Largemouth Bass

Largemouth Bass
Micropterus salmoides

Yellow Perch

Yellow Perch
Perca flavescens

Pumpkinseed

Pumpkinseed
Lepomis gibbosus

Northern Pike

Northern Pike
Esox lucius

Chinese Mitten Crab

Chinese Mitten Crab
Eriocheir sinensis

New Zealand Mud Snail

New Zealand Mud Snail
Potamopyrgus antipodarum

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Wetland and Aquatic Invasive Plants

Eurasian Water Milfoil

Eurasian Water Milfoil
Myriophyllum spicatum

Parrotfeather

Parrotfeather
Myriophyllum aquaticum

Common Cordgrass

Common Cordgrass
Spartina anglica

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Aquatic Invasive Watch List

Northern Snakehead

Northern Snakehead
Channa argus

Swamp Eel

Swamp Eel
Monopterus albus

Wakame

Wakame
Undaria pinnatifida

Siberian Prawn
Exopalaemon modestus

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