Crustaceans

Amphipods

Invertebrates resembling terrestrial “sand hoppers” (compressed from the sides)

Copepods

Small, swimming, comet-shaped invertebrates with no bivalved carapace

Crabs

Freshwater crabs with round body and 10 legs including two with pincers, OR Estuarine crabs with rectangular body and 10 legs including t...

Crayfish

Crayfish with10 legs; the first two supporting large pincers

Isopods

Slater-like invertebrates, some are active swimmers (estuarine and fresh water)

Shrimps

Shrimps with spiny rostrum between the eyes, some legs ending in tufts of hairs OR Shrimps with no rostrum and no tufts of hairs on the c...

Other crustaceans