Aquatics

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.

MOST WANTED FOR REPORTING

PRIORITY

Zebra & Quagga Mussel

Dreissena polymorpha, Dreissena rostiformis

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

POTENTIAL

Algae – Didymo

Didymosphenia geminate

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

ESTABLISHED

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.

POTENTIAL

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.

ESTABLISHED

Chinese Mysterysnail

Cipangopaludina chinensis

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

ESTABLISHED

Chytrid fungus

Batrachochytrium dendrobatidis

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

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.

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.

POTENTIAL

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.

POTENTIAL

Round Goby

Neogobius melanostomus

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

ESTABLISHED

Rudd

Scardinius erythrophthalmus

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

ESTABLISHED

Rusty Crayfish

Orconectes rusticus

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

PRIORITY

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.

POTENTIAL

Snakehead

Chana spp

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

POTENTIAL

Viral Hemorrhagic Septicemia (VHS)

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

POTENTIAL

Whirling Disease

Myxobolus cerebralis

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

ESTABLISHED

White perch

Morone americana

Outcompete native fishes for food; feed heavily on baitfish used by other species; have been associ-ated with declines in walleye and white bass.