Looking for advice on a recently established multI tank ( my first cichlid tank). The tank is a 20 long, species only and fully cycled by transplanting a sponge from an established tank and using fritzyme. I got 4 adults from my LFS but 3 were males, then I decided to get an additional 3 adults and 4 fry from a local hobbyist. I know this was a bad idea on many levels, but I placed the additionsal adults and fry in the tank last week ( the first group had only been in a week prior to the introduction). All seemed to integrate well except one - the largest fish( presumed male) who hangs around the sponge filter. I added shells ( over 50 in the tank now, and placed some nice ones by the filter, but he still hangs out up top a lot of time, and I have seen mouth fighting with the second largest fish ( also presumably male). No injuries noted ad yetbit I feel bad for this one fishafter watching this behavior for almost a week. Any suggestions? Should I allow more time? It seems to me the territory boundaries are still somewhat fluid right now. Any suggestions appreciated!