I know that crayfish are known to attack other fish. I really want a blue cray, but have clownloaches. Would the cray attack my clownloaches? or would it be okay? I also have angels and an ebjd, and possibly getting a baby lemon oscar. I know when the oscar gets big he could possibly go after the cray's, but I'm hoping it'll get big enough, and I'll have alot of hiding places for it. Whats everyone's opinion? think it'll be okay?