Add Yahoo as a preferred source to see more of our stories on Google. The super invasive rusty crayfish, sometimes called a gladiator, has been slowly taking over several waterways in Pennsylvania.

Getting your Trinity Audio player ready... 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 ...

Officials in Colorado are sounding the alarm over the presence of an aggressive invasive species that poses a serious threat to local wildlife. According to a press release from Colorado Parks and ...

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 ...

Rusty crayfish, an invasive species, has been discovered in the Little Thompson River in Larimer County, Colorado. This aggressive crayfish, known for its big appetite and rapid reproduction, poses a ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER (KDVR) — An aggressive aquatic ...

Researchers trap rusty crayfish to test ways to remove the invasive species. Researchers trap rusty crayfish at Tofte Lake to develop methods for removing the invasive species from northern waters ...