I have an established 90 gallon (3ftx2ftx2ft) which has 1 pair of covicts, 1 pair of forest jewels, 3 silver dollars, 1 green african cichlid (don't know the name but it is fine with the other fish), 2 red-tailed black sharks and a bumblebee catfish. I have a large vine looking ornament in tank with black gravel. I am willing to add other things to the tank such as plans, rocks, driftwood. I want some ideas of fish that can make this tank a really good looking tank. I do like bigger cichlids such as green terrors, severums and jaguar cichlids. But also like other fish that can happily co-exist with these cichlids.