I've heard that a colony of one or two males and multiple females is best. I've never bred fronts but was recently considering doing a colony in a 180. Decided not to but learned a lot in the process. Why Kapampa? Are you looking to sell them? Are you going to get wild breeders?
We got a super deal on them but lost 1 and the 4th was getting beat up so we moved it. We also want sell some of the fry we hope to raise, as these are f1's.
We have a 6ft 120 we can move them into I agree that would be better. The 90 was the only option then. Should they be kept in low light or will that matter.
Sounds like a good idea to me, frontosas love lots of rocks and rock formations. I hope you know it will take 3 to 4 years for them to reach sexual maturity. Once they've matured, they will develop a pronounced hump on their heads. I also read its best to have four females for each male
Our fronts are mature about 8in for the maleand 6in for the females. The male has some of the longest fins I have ever seen on a fish only thing is he is very dark colored. The females are showing way more blue is this normal.