My tank has been up and running for awhile now. Live rock looks cool, levels look good, etc. I recently introduced a small cleanup crew and 2 blue damsels with yellow fins. They looked about the same size in the store, but one of them is clearly the aggressor. He is nipping at the other one's rear fin, and it is making me angry.
Any advice on how to catch this sucker and put him in my smaller tank by himself? He is a fast SOB and I'm damaging my nice live rock setup by moving stuff to try and get him.
Also, should I bother or let him kill the other Damsel (i.e. nature take it's course). What will be the odds of the other one surviving with a eaten up tailfin? Does that grow back?
Thanks for any advice, this is upsetting my wife, and making me nuts trying to catch this darn thing.