i have a 100 gallon tank 5 feet long, 12 inches wide, and 2 feet high. i was just wondering if i could put a group of callochromis Melanostigma. i would get approximaltly 8 of them. would they be too aggressive? the tank mates are 6 alto comps, 15 jumbo cyps, and 6 multies. If i cannot get the melanostigma, i will get 8 callochromis Stappersi. i have a question also about the stappersi. do they have any color at all, because all the pictures i see in the books and internet show them as plain silver fish. thanks