A rock lobster (family Palinuridae).
Any of numerous freshwater decapod crustaceans in superfamily Astacoidea or Parastacoidea, resembling the related lobster but usually much smaller.
The species Thenus orientalis of the slipper lobster family (Scyllaridae).
A freshwater crustacean (family Cambaridae), sometimes used as an inexpensive seafood or as fish bait.
A freshwater crayfish (family Parastacidae), such as the gilgie, marron, or yabby.
to catch crayfish
crab louse, Pthirus pubis.