I bought A BP last week and was amazed at how fascinating these fish are, in my haste (i think) I bought another one. The original is now relentlessly bumping and annoying the other BP. It does get a rest now and then. I appreciate that the BP are terratorial however will this stop? Or will it calm down? Or will I have to move one BP out of tank? (dont want to do the last option.) The BP getting the hard time never fights back and is very submissive, are they too young to be courting? No mouth locks, just one doing all the harrassing. I know its difficult to tell the difference between sexes. Looked at fins both look pointed rather than round. One does seem slighlty more defined with very small black spots running along its back.