a crustacean (Cercopagis pengoi, Cladocera) from the Black and Caspian seas now introduced to North American lakes. Their tails are long, spiny and shaped like a fish hook and they hook themselves together, clogging fish nets and lines
a crustacean (Cercopagis pengoi, Cladocera) from the Black and Caspian seas now introduced to North American lakes. Their tails are long, spiny and shaped like a fish hook and they hook themselves together, clogging fish nets and lines