1. Asellus aquaticus is a freshwater crustacean resembling a woodlouse.

2. Woodlouse or slater a land-living Crustacean : Crustaceans (make up a very large group of the Arthropods which include the crabs, lobsters, crayfish, shrimp, krill, barnacles brine shrimp, copepods, ostracods and mantis shrimp.