I agree. Although a pair of brichardi or one of the complex, would probably be fine as well. Just keep thinning out the young, so it doesn't get to crowded.You won't be able to do any malawi cichlids, you'd need something at least twice the size of your tank for any of those. You could probably do a couple kribensis. Or a pair of julidochromis. maybe a small group of neolamprologus multifasciatus. not a lot, though. I'd guess you'd either be looking at a pair of small fish or -maybe- a group of 6 multifasciatus.