So I was out at PETCO and they had some misc. crays for 1 buck a piece so i picked up to as my testers. I fed the green sunfish alot before i went to get them so hopefully he would not try to eat them when they went into the tank. That theory was crap..lol...he tried to eat both of them as soon as they hit the water. Luckily they fought back now there is a stand off in the tank. Well if they dont make it I will have to go a bit bigger and retest. wish me luck.