Juan Mateo Rivera looking for crabs in a stream in Assis, Acre State, Brazil in 2022. In Manizales, perched in the Colombian Andes, researchers are studying how a native species of small fresh-water ...

It’s crayfish season in Louisiana, but the Pacific Northwest is receiving all the crayfish spotlight. Researchers recently discovered two new species of the crustaceans: the Okanagan crayfish and the ...

Of the 500-plus species of crayfish that exist worldwide, more than 300 varieties inhabit the rivers, lakes, and bayous of the southeastern United States, where they are colloquially called crawfish.

Nearly a quarter of the world's freshwater species are at risk of extinction, according to new research. A detailed extinction assessment of more than 23,000 species of freshwater fauna by the ...

Colombian biologist Ada Acevedo-Alonso is educating communities about an invasive crayfish species while also studying the freshwater creature's distribution and impacts on the environment. The ...