Well I presently have two strains of Moscow guppies. Three male and four female Blue and a trio of Red. Was planning on each strain in separate tanks a twenty nine for he Red Moscow and a thirty gallon for the Blue Moscow. Well the problem is the twenty nine presently has three Rosy Barbs in it and they don't seem compatible with the fish in my other tanks. I've had them for two or three years (only fish buy I regret but it is what it is). So I've ended up dividing the 30 gallon and put males on one side and females on the other. Don't want mixed strains. That means ten guppies in my thirty gallon. If I want to breed them I would need to be done in separate tank. Anyone else do it this way?