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 ...

Each Australian redclaw crayfish caught during the research project gets an identifying label. Aquatic biologists are tracking an invasive crayfish species native to Australia that’s turned up 8,000 ...

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 ...

Cane toads, rats, cats and pigs — Australia has been on the receiving end of more than its fair share of feral animals over the years. But it has exported plenty of its own as well. The US state of ...