On guard. We used to catch endless amounts of crayfish in a creek near our childhood swimming pool. Inevitably, they would end up in empty tennis ball cans and taken home, where they would unfortunately pass away (out of ignorance, no malice). This guy was caught at a nearby creek with a butterfly net, and it taught my daughter about the endless variety of life. He was catch and release, and hope he is doing well back with his crayfish family.