A freshwater crayfish (family Parastacidae), such as the gilgie, marron, or yabby.
Any of numerous freshwater decapod crustaceans in superfamily Astacoidea or Parastacoidea, resembling the related lobster but usually much smaller.
A rock lobster (family Palinuridae).
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.
to catch crayfish
Any of various insects of the order Hemiptera and in particular of the suborder Heteroptera, that are wingless or have two pairs of wings, and have mouthparts adapted for piercing and sucking.