my dad is getting a 55 gallon from a friend at work. but he wants cichlids (i dont blame him lol) but he wants big ones. like he wants an oscar and some other fish. he wont put just one oscar in the tank. he wants a few cichlids. can we put a firemouth, a black convict, a pink convict, a severum of some sort all in the 55? there will be lots of slate caves and things. but im just trying to get an idea of what we can have because he wants a few fish but he doesnt want community. i was thinking all of those fish and 6 tiger barbs for dithers. they will all be fed pellets and flakes. they will all be introduced as babies or at least not mature yet.