Aquatics

Identification Tools

The following are aquatic species that are considered invasive to Nebraska.
Click any photo below to learn more about these species and what you can do to help.

Priority
Zebra and Quagga Mussels

Zebra and Quagga Mussels

Dreissena polymorpha, Dreissena rostiformis

Forms dense colonies and filters large quantities of plankton from water, decreasing the food supply for native species.

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Potential
Algae - Didymo

Algae - Didymo

Didymosphenia geminate

Freshwater algae that attaches to rocks, plants, or other stable underwater surfaces and can form large, unattractive “blooms.”

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Established
Asian Clam

Asian Clam

Corbicula fluminea

May compete with native clams; can infest and interfere with irrigation systems and canals, and block water flow through industrial water intake pipes.

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Established
Bighead Carp

Bighead Carp

Hypophthalmichthys nobilis

Capable of out-competing native fish for resources. They are opportunistic feeders that consume high quantities of zoo plankton and phytoplankton.

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Established
Chinese Mysterysnail

Chinese Mysterysnail

Cipangopaludina chinensis

Can compete with native snail species. Potential vectors for the transmission of parasites and diseases.

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Established
Chytrid Fungus

Chytrid Fungus

Batrachochytrium dendrobatidis

A fungus that infects amphibians in their keratin containing skin layers.

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Established
Heterosporosis

Heterosporosis

A parasite that infects and degrades muscle tissue of yellow perch and other fish species. It creates thick sporophorocysts, in which spores develop.

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Potential
Largemouth Bass Virus

Largemouth Bass Virus

Most bass with LBV will appear completely normal. In some cases, dying fish will be near the surface and have trouble swimming.

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Potential
New Zealand Mud Snail

New Zealand Mud Snail

Potamopyrgus antipodarum

Freshwater snail 1/5 inch with cone-shaped shells. Can reduce food availability for native and game fish species.

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Priority
Red Swamp Crayfish

Red Swamp Crayfish

Procambarus clarkii

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Potential
Round Goby

Round Goby

Neogobius melanostomus

Outcompete native fishes for food, prey on darters, sculpin, eggs/fry of lake trout and sturgeon.

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Established
Rudd

Rudd

Scardinius erythrophthalmus

Outcompete native fishes for food, can also feed on vegetation, tolerates eutrophic or polluted waters.

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Established
Rusty Crayfish

Rusty Crayfish

Orconectes rusticus

Eats and damages stands of aquatic plants, reducing food sources and aquatic habitat for aquatic invertebrates and fish.

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Priority
Silver Carp

Silver Carp

Hypophthalmichthys molitrix

Known for their ability to jump several feet out of the water when disturbed by boaters. They also out-compete native fish populations for resources.

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Potential
Snakehead

Snakehead

Chana spp

Can devastate populations of native fish and wildlife. At all stages of their lives will compete with native fish for food.

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Potential
Viral Hemorrhagic Septicemia (VHS)

Viral Hemorrhagic Septicemia (VHS)

Novirhabdovirus sp.

Fish will show widespread hemorrhages (bleeding) throughout body surface; eye, skin and fins and also within the internal organs.

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Potential
Whirling Disease

Whirling Disease

Myxobolus cerebralis

This parasite prevents the fish from foraging for food and evading predators, resulting in death.

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