As used in this part:

  (a) “Commercial purposes” means offering for sale, selling, giving, or furnishing to others.

  (b) “Crayfish” means any arthropod of the decapoda family.

  (c) “Minnows” means chubs, shiners, suckers, when of a size ordinarily used for bait in hook and line fishing, dace, stonerollers, muddlers, and mudminnows.

  (d) “Wigglers” means Mayfly nymphs or any other aquatic insect nymphs or larvae.