Our real knowledge really only goes back to the late 1960s. We have to base our best decisions on that limited knowledge.

They have a limited ability to move over land in wet weather, but the ability of red swamp crayfish to get from Lake Mead to Beatty is probably pretty limited. We assume people are moving...

They’re a good fish for aquaculture, and that’s how I like them, in frozen fillets.

Crayfish, aquarium fish in general, bullfrogs and tilapia – those are the top ones.