Thanks for the response!!
What would be ideal in a 75 gallon? 1 male with 1 female or 1 male with 2/3 females.
Also New World cichlids do not typically have harem breeding styles such as many African cichlids, although I think some do have this style but not as many. Most New World cichlids select one mate and that is the only mate until they are at least separated, the other mate dies, or finally the other mate proves to be more successful or stronger, such as improving the likelihood for successful populations for the future. So other "candidates" do not stand a chance to survive in that small of an environment regarding adults. I hope this helps!
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