Ok. So I have a family of cacatuoides and a pair of keyholes sharing the mid to bottom of my 30g tank. I'm looking for a replacement to my large angelfish which typically spent most of its time in the upper section of the water column. Are there any cichlids out there other than angels that don't run for rock or plant cover at the drop of a food flake and would fill my upper portion of the tank. I have been reading and reading but I cannot find any. The only option people keep suggesting are hatchet fish, however I would prefer a solitary or pair of slightly larger fish where poss. Thanks