My 8" black shark & 3" salvini have decided to start kicking the crap out of my 6" JD .the JD has been in there for a week w no probs from anyone,i could put the jd in my 20 but my texas and gt, both about 2", are in there to grow out, and my JD is really stressed! IM not really willing to part w any of them, what would you do ?