At two inches these are incredible rainbow reflecting fish, at one inch not so much. The good news is that these are active schoolers that grow quickly and are incredibly hardy. These schooling fish grow to 3.5 inches and can handle African cichlids and community tanks. This is a very adaptable species. Males have slightly longer fins than females but both have the same remarkable rainbow reflection. We do not recommend male only schools as there will not be as much interplay and the males will not display as well.