No doubt it works for your breeders, but I'd bet there are not "crayfish, and assorted other africans" in the tank with them. It is also a smaller group than most want to keep.tmoore said:I know that not all fish are the same, but the breeders that I got my Kitumbas from breed their wilds in a 5 ft tank with 1m 3 females. They said that it is the best breeding group they have ever had. When their biggest female holds, the male will carry some too!!! They have had close to a 100 baby Kitumbas at one time!!!