Keep my Mota with a large male GT, female cuban, Barred Midas Pair, and a 4 inch male Con/HRP hybrid. All fish are 6-6.5" except GT which is now 8.5". he is the 2nd most aggressive fish i have owned the first was a female Mota that died mysteriously. he is kept in check, barely, by the GT. he has staked a territory next to the breeding midas pair and and will not budge. The Female cuban and him face off all the time.