awwww.... sorry to hear about losing one. they are so cute. i have a breeding pair that are constantly mating. but they are in my 90 and i cant get ahold of them to raise the babies. great job by the way ! anyways you may need to get a few of those tank dividers. you will need to divide them out as some will grow quicker than others and they will prob. need to be sepereated from the smaller ones to keep them all safe and happy