Thanks for your responses, I think i have a problem, on closer inspection it appears that we bought three red top kimpuma males (the LFS advised 1m 2 f). If what I have read so far is true, sooner or later only one male will be left. The fish are about 6mts old how much time do I have before they start attacking each other? I know I will have to remove the rocks in the tank to net them, hopefully, it can wait to next week-end :rant2: