Ok so I moved and finally set up my 55 gallon tank again and the first fish I bought was a pike cichlid at a lfs. Most likely its a belly crawler? He's very active and is eatting already...no problems. Well I can't decide what I want to put in there with him. Other than a black ghost knife...my gf really wants it. Any other suggestions? Maybe something that doesnt get too large...I know the knife does but I'm pretty sure that takes some time so if need be we could sell it or upgrade. Alittle about the tank, its got a dark substrate, I got a cave out of rocks in the middle, and a few plastic plants here and there but plenty of swimming space.