BROWNSVILLE, Texas — Scientists in Texas are on high alert for an invasive species that could threaten native wildlife: an Australian crayfish that has appeared in the state’s resacas, the remnant ...

Scientists have described a new species of colorful crayfish—and it might already be sitting in your aquarium. The researchers detailed their discovery in the journal Zootaxa last week. Though ...

Royal Oak — Knee deep in a pond behind Royal Oak High School, Mikela Dean split open a tubular wire trap she had extracted from the mucky water. Nothing inside. Again. Dean, watershed ecologist for ...

A new critter is creeping into the United States' waters. The invasive Australian redclaw crayfish has been spotted in southern Texas, roughly 8,000 miles from its home. The freshwater crustacean is ...

Williams recognized the extremely rare bilateral color variation, a mutation he had previously read about in lobsters and observed in an American redstart bird. The class brought the crayfish back to ...

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 ...