The study identifies the Okanagan and Misfortunate Crayfish as two new species, adding to a list of over 640 global crayfish species. The Signal Crayfish is native to the Pacific Northwest, but most ...

Signal crayfish are larger and more aggressive than Minnesota crayfish and the invasive rusty crayfish. They eat aquatic plants, detritus, fish eggs, smaller crayfish species and other beneficial ...

Long mistaken for the troublemaking Signal Crayfish, these two new species — the Okanagan Crayfish and Misfortunate Crayfish — have now been named. Advanced Search Home ...

Signal crayfish, an invasive nonnative freshwater crustacean species, have been found in a western Minnesota lake, according to the state Department of Natural Resources. The DNR said Friday that ...

ALEXANDRIA, Minn. — Yet another aquatic invasive species has invaded a Minnesota lake — this time the signal crayfish, a native of the Pacific Northwest confirmed in Lake Winona.

Invasive signal crayfish spotted in lake near Alexandria 00:20. ALEXANDRIA, Minn. — Wildlife experts are dealing with a new potential threat in Minnesota's waterways. The Minnesota Department of ...

Crater Lake's famously pure water and a newt that calls the lake home are under threat from the explosion of an invasive crayfish, leading to potential action under the Endangered Species Act, the ...

PORTLAND, Ore.— The Center for Biological Diversity filed a legal petition today with the U.S. Fish and Wildlife Service to protect the Crater Lake newt (also known as the Mazama newt) under the ...

An invasive species has been confirmed in one of Minnesota’s Douglas County lakes. According to the Minnesota Department of Natural Resources, the signal crayfish has been found in Lake Winona.

“Without endangered species protections this cute little newt will soon blink out of existence,” said Chelsea Stewart-Fusek, an endangered species attorney at the Center. “We need funding right now to ...

Wildlife officials say signal crayfish were found in Lake Winona, which is near Alexandria, Minnesota. This is the first time they have been found in Minnesota waters. South Dakota keeps one-day ...