1. Crayfish Phylum Arthropoda Class Crustacea Appearance:
~ 7.5 cm (3 in.) long
500 sp in N. Amer.
Decapods = 10 legs
Exoskeleton = shed w/growth (molting)
Looks like small lobster

2. Omnivorous scavengers Dig burrows
Behavior:
Most active at night
Omnivorous scavengers
Dig burrows
Most FW, some SW
Food in Louisiana, Kentucky, etc

5. Morphology of a crayfish: edible freshwater crustacean, with pincers on the two forelegs. Claw: ends of the largest of a crayfish limbs. Rostrum: extension of a crayfish's shell. Head: foremost part of a crayfish. Thorax: upper part of a crayfish's body. Abdomen: lower part of a crayfish's body. Exopodite: external part of the uropod. Endopodite: internal part of the uropod. Uropod: swimming appendage of the crayfish. Telson: last segment of the abdomen of a crayfish. Segment: ring of the abdomen of a crayfish. Walking leg: limb of a crayfish used for forward motion. Coumpond eye (stalked eye): complex sight organ of a crayfish. Antennule: small antenna. Cheliped: front leg which ends in pincers. Antenna: organ of touch of a crayfish.