Ralph ....... how many longears did you end up getting for your 90?
I tried an all male longear set up in a 125 in the past. Basically what I discovered is that a single dominant male required approx 2ft of the tank, so in a 6 ft tank best case scenario was 3 dom males, or 2, with the one in the middle getting harrased from either side. The rest of the smaller males got pushed around by the other 2 or 3 dom fish. I even had pseudo displaying and breeding take place within the group of 12 males. (I actually thought that a few sub dom males, were females) I had a lot of cover, line of sight breaks, etc, and in the end I wasn't happy with my choice of all males. Later on down the road I ended up selling the fish and doing something different with that tank. In hindsight I wish that I had gone with 2 males, and several females.
I hope that you have better luck with yours.
I tried an all male longear set up in a 125 in the past. Basically what I discovered is that a single dominant male required approx 2ft of the tank, so in a 6 ft tank best case scenario was 3 dom males, or 2, with the one in the middle getting harrased from either side. The rest of the smaller males got pushed around by the other 2 or 3 dom fish. I even had pseudo displaying and breeding take place within the group of 12 males. (I actually thought that a few sub dom males, were females) I had a lot of cover, line of sight breaks, etc, and in the end I wasn't happy with my choice of all males. Later on down the road I ended up selling the fish and doing something different with that tank. In hindsight I wish that I had gone with 2 males, and several females.
I hope that you have better luck with yours.