I want a black belt cichlid. A local lfs has em for 8.99 at about 2-3". Is there any way to sex them this small? and what would I look for as far as male to female characteristics, like would a male be dominating the tank? or does it not matter as far as aggressivness at this size?. There' s like 20 of them, at the lfs in the same tank. Also,are males more colorful than females? 
