The Frontosa is a deep water Tanganyikan and really requires much differant water paramaters and subdued lighting (High K mixed with Actinic) similar to reef lighting to be as happy as they can be. I would give them a tank to themselves. As far as aggression goes, the previous posts were correct, the Jag can be rough but in a 265 I say go for it and if it's too much for the others cull them by what you like the most. Keep what you like. Jags are very cool and GTs are among the most beautful cichlids around the rest are a dime a dozen.

