Kim,
Most of the fish farms carry redear. Just a couple of notes on RES based on my experience. Mine do not take to pellet food which could be a problem if you plan on feeding them. My observations(from both pond and aquarium) are that they only take live food.Their favorite foods are mollusks. They are not nearly as aggressive as BG, which is great for swimming, but are more difficult to catch. Vast majority of the ones i catch are on the beds. Great eating though if that's your goal.