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.

Add Yahoo as a preferred source to see more of our stories on Google. Officials in Colorado are sounding the alarm over the presence of an aggressive invasive species that poses a serious threat to ...

LARIMER COUNTY, Colo — A non-native crustacean has been discovered in the Little Thompson River for the first time. Colorado Parks and Wildlife (CPW) confirmed the presence of rusty crayfish in the ...

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 ...

What’s rusty and invasive to our waters? The rusty crayfish! Join the Forest Preserve District of Kane County for the seventh annual Rusty Rodeo on Saturday, Aug. 9, from 10 a.m. to noon. It’s time to ...

This invader is eating through Colorado’s rivers, and it could wipe out native fish and plants if left unchecked. Colorado wildlife officials are raising the alarm after an aggressive invasive species ...

STEAMBOAT SPRINGS – An aggressive crayfish native to the Ohio River basin has been found in the headwaters of the Yampa River in Colorado for the first time, prompting state wildlife officials to bar ...

ANTRIM COUNTY, Mich., (WPBN/WGTU) -- The invasive rusty crayfish continue to be an issue in Torch Lake. The Torch Conservation Center said the invasive species from the Ohio River are aggressive ...

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 emergence has caused concern among state wildlife officials. Officials issue urgent warning after alarming river discovery sparks concern: 'Much more aggressive than our ... species' first ...