I am aware that their diet in the wild mainly consists of crusteceans- crabs being on the menu, but prawns allegedly being their favorites. That said, would it be safe and viable to catch crayfish for one? What about those little invasive green crabs? I'm sure the crayfish bit is safe in terms of nutrition, but I'm not sure about marine crabs, since I've heard marine prawns have thiaminase, so I was just wondering.
