I'de get a general stocking list.. since you said "kids" and not just a kid.. so you'll wanna make everyone happy. find out what the kids like.. and make a list of either fish/ or what the kids each individual desires are in fish... and go from there. imo though a mixed african tank could be the perfect solution.. let each kid pick out so many fish. malawian's in particular are many colored, and many will max about 6". hardy, mixable, easy to find at most chain stores, lfs. had a family do this years ago at the lfs i worked at they had a 55.. and 3 kids.. and no one could decided on a fish they liked.. that was compatable w/ what the other kids liked... until one of them was drawn to the africans.. a kenyi as I remember.. 5 africans later... everyone had a fish even mom 'n dad picked out their "own" fish.
yeah that would me my suggestion.
yeah that would me my suggestion.