Researchers recently discovered two new crayfish species: the Okanagan crayfish and the misfortunate crayfish (Pacifastacus ...

Diver Masumi Palhof, technician with the Kodiak Soil and Water Conservation District, with a signal crayfish she nabbed in ...

Several illegal crayfish traps which could have been dangerous to other wildlife have been removed from a canal by officials.

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 ...

The Signal Crayfish is native to the Pacific Northwest, but most of its research has investigated it as an invasive species. Studying the species in its native habitat unlocked a new layer of ...

This signal crayfish, a native of the Pacific Northwest, can grow up to 7 inches long and weigh as much as 4 ounces — about three times larger than native Minnesota crayfish, according to the DNR.

For decades, the Signal Crayfish has been an ecological troublemaker. It is invasive and widespread across Europe, Asia, and parts of the United States. Recently, researchers at the University of ...

Kodiak's community and biologists are looking at solutions to keep the population of crayfish down. As Alaska’s climate changes, invasive species are becoming more common, and in many cases more ...

The crayfish could expand to 100% of the lakeshore within the next two years. Impacts on Crater Lake's clear water The newts aren't the only thing at risk at Crater Lake.

Crayfish conservation is accelerating across Wales as organisations work together to protect the white-clawed crayfish, a ...

The crayfish have now become an existential threat to the endemic newt. The newts are a subspecies of the rough-skinned newt that lives across the Pacific Northwest.

Because both species were previously thought to be signal crayfish, the discovery comes as a surprise. These sneaky species required advanced genetic. It’s crayfish season in Louisiana, ...