I have a group of 16 Tropheus moorii Moliro and I think 2 of them are holding but I can't tell. I have had plenty of experience breeding other cichlids, but these Tropheus are proving to be real hard. I have had them for 6-8 months, they are 3-4 inches, and in a 75g. Any other information about breeding Tropheus would be greatly appreciated. Thank You.