My 55 gallon had Saulosi and White Labs. I acquired 8 unsexed juvies each. It now appears my Saulosi's are evenly divided four males,four females. Could I keep the males and add more females? Say 8. Total 4m/12f. This would bring total to 24. Don't want to overstock. I also have empty 30 gallon available that is 36" length. Future plans are to add a 55 or 75 but that may be months away.