I recently purchased a 75gallon tank so I could put my mbunas in a large african cichlid themed tank. (Previously the two I have owned for the past 2.5 years were separated in individual small tanks.) They are both males. One is a metriclima callainos
(~3.5-4" long) and the other (~5-5.5") I'm still trying to figure out, looks similar to pseudotrophus greshekii
but sometimes has deeper color and black vertical bars.
So the tank has many caves with some plants. It also has a common pleco, 3 goldfish (tank starter fish...soon to be cichlid pike food) and a snail.
Of course the larger of the two cichlids is dominating the smaller and making his life miserable (at this point he would be better off in the ten gallon my himself again)
I would like to fix this and I have a few questions on others opinions:
-If I add females of both species, assuming I figure out what the larger one is and that he is not hybrid, will this limit the aggression of the males toward eachother?
-Should I add more hiding places and plants, so ideally they see eachother less?
-Will adding different types of fish limit the aggression? What kinds?
-I would like to have more fish in this tank (w/o aggression issues), maybe more african cichlids if doable, and possibly some kind of upertank/surface dweller. Any suggestions?