Good points, probably why you can't find much on the topic. I was thinking of doing an all male. May reconsider now.I realize the temptation of keeping a favorite genera of cichlids together in the same tank.......
but in nature, you don't usually find more than one Vieja or other cichlids of the same genus in the same location.
Sholing species like Thorichthys are an exception
More than one species of Vieja would be competitors for the same resources in a limited area, things like, available food, or for breeding sites, and available space, so the one best adapted to the area would usually win out.
For these reasons I "now" never keep two species of a single genus in the same tank.
The other reason....
I don't want cross breeding, which is often what happens when keeping two similar individuals of a genus together, not that breeding is your intent.
But the idea that males won't fight over territory if a female isn't present, may work sometimes for some African cichlids, I have not found this to be the case with Central Americans.
I tried this type tank a couple decades ago, before I realized the implications.
I went to Don Conkels fish farm Florida , and brought back groups of half dozen genera of Vieja (and Vieja type) juvies.
It worked well until they all hit about 4-5", then the largest started taking out the smallest, until to save the rest, had to separate them by species.
Of course it may work in a 280 gal, but at adulthood, even a 280 gal may seem small for 5 full grown Vieja
I agree with this.Personally think you would be much better off picking your favorite vieja species, growing out a big male, and keeping him with some tough smaller CA species that the vieja won't see as direct competition.
I’ve had almost zero aggression w/ a male melanura, with cribroheros and thorichthys in a 150g. Very colorful and active tank. The melanura was 13”.Guys sorry there was a typo iys a 72 inch tank not 60. Do you think that pair of melanura with mekki or robertsoni could work? Possibly smaller pike cichlid down the road? Maybe clown loaches?