Keywords: | Crayfish, Orconectes virilis, virile crayfish, northern crayfish, Cambarus robustus, big water crayifsh, Orconectes rusticus, rusty crayfish, Cambarus fodiens, Fallicambarus fodiens, digger crayfish, Orconectes immunis, calico crayfish, papershell crayfish, Cambarus bartoni, Appalachian brook crayfish, Orconectes obscurus, Allegheny crayfish, Orconectes propinquus, northern clearwater crayfish, station-holding ability, streamlining, hydrodynamics, slip speed, drag, substrate, distribution |