These crayfish are larger, more aggressive, and reproduce more quickly than native species, leading them to dominate ecosystems and disrupt food webs. Rusty crayfish have a significant impact on ...

The rusty crayfish can be often identified by the rust-red patches on its carapace. Credit: Courtesy of the Missouri Department of Conservation / Maine Public It was a cool August morning, and Amanda ...

URBANA, Ill. – In many North American lakes, a tiny clawed creature has become a big bully. The invasive rusty crayfish roams lakebeds, snapping up snails, bivalves, and water plants, cutting off food ...

This story originally appeared on The Guardian and is part of the Climate Desk collaboration. Small, bluish-gray, and speckled, the marbled crayfish would be easy to overlook. Except for the fact it ...

Rusty crayfish, an aquatic nuisance and an invasive species, has been discovered in a Larimer County river south of Estes Park, according to Colorado Parks and Wildlife. This is the first time the ...