Invasive rusty crayfish, sometimes called gladiators, monitored in various Pa. waterways
The Pennsylvania Fish and Boat Commission is monitoring invasive rusty crayfish that act like gladiators as they try to take over native species.
Center for Biological Diversity1y
Four Freshwater Mussels, One Crayfish Proposed for Endangered Species Protection
The crayfish is proposed for threatened protection ... Minnesota, Missouri, New York, Ohio, Pennsylvania, Tennessee, West Virginia and Wisconsin. The Service is proposing 2,012 river miles in Indiana, ...