I've got an albino channel catfish that loves to eat my fish and scare other larger fish RIGHT out of the tank. We have a pond outside and I've read that they can live in cold water. Would it be wise to put him out there or just take him to a store for some decent credit. He's only about 5 inches right now and I'd rather get rid of him before he's a whopping 3 1/2 feet and able to eat ALL of my fish.