The Okanagan crayfish found in North Central Washington and north in British Columbia is “olive brown to brick red,” ...

For decades, the signal crayfish has been an ecological troublemaker. It is invasive and widespread across Europe, Asia, and parts of the United States. Recently, researchers at the University of ...

Two online aquatic animal suppliers were fined for shipping invasive crayfish to Wisconsin. The companies, based in North ...

Most everyone who has visited Florida or California has seen brown pelicans, and who isn’t delighted by the spectacle of such ...

The companies, based in North Carolina and Indiana, ignored warnings from the Wisconsin DNR. The invasive crayfish pose disease risks, outcompete native species and are costly to eradicate.