I got this fish about a yeah ago, perfect first fish no aggression, or anything like that. Now that's older it's been injuring and killing fish that I have and has been the recent cause of all the problems that I have causing. The pj cardinal that the clarkii is targeting is looking pretty bad, I have already decided to remove him . the 2 other fish are a flame hawk and dottyback. I'm worried that removing the clarkii will make the other fish more aggressive. Anyone have experiences like that, the other fish are perfect right now. I'm taking actions to keep the pj safe until I remove the terrorist. wish me luck any tips would be appreciated too