a friend of mine has a bunch of convict cichlid babies, and she wants me to take a few. she said some of them are pink, but i thought they were only black and white? any thoughts of 3 or 4 convicts in with 11 tetras and 3 pitbull plecos?? i don't know much about them, but i wanted a third kind of fish and she wants to give them to me free. it's a 20 gallon high tank.