Heppy - your homework assignment is long overdue - you were supposed to provide photos of crayfish top and bottom view so Cody could identify. Drop a few in alcohol when time allows so at least you're aware of the species stocked into the fishery - not all species behave similarly and it's helpful to be aware of potential issues down the road.

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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