Well, you'll have to make sure (and I really do mean make sure) you get a group of 1 male and 3 female...okay, are we still taking about red zebras here, or are you switching to red top zebras now? Either way, absolutely only ONE male, and THREE females. The labs you don't really have to worry about sexing. The saulosi will have to be the same thing - ONE male, and TWO (three would be better) females. You may have to buy groups of juveniles and let them grow until you can sex them, and then pull out extra males. As long as you stick to that male/female ratio on the saulosi and zebras (whichever we're talking about), then yes, that should be just fine.