t1a1c1h
04/19/2017, 11:12 AM
Our tank has been set up for about 18 months now and recently we have had 2 deaths and started having problems with aggression. We have a clownfish pair (not hosting anything) an orchid dotty (until 2 weeks ago we had a breeding pair but the male has died....don't know why), midas blenny, 3 blue star damsels (did have 5 but 1 died about 3 months ago, another about 2 weeks ago with the dotty don't know why), and a male bangaii cardinal. We see a LOT of aggression from the bangaii to the damsels, particulalry in the evening when he wants them to go to bed so he has the tank to himself overnight but he doesn't actually bite them, just chases them. The blenny seems the likely culprit maybe defending his precious hole in the rock against any other fish even coming near. The question is what can we do about it?? We have a yellow tang in QT, is he going to make things better/ worse/ no different?? Should we add more rock? More fish - to dissipate the aggression between more individuals thus each one gets a smaller dose? If so which ones? It's a 90G mixed reef (looking pretty empty of inhabitants right now I wont lie), we feed frozen or pellets twice a day.