Thank you for your insights @varanidguy
Ive had many different South American cichlids over the years and Ive never seen any consistently harass fish outside species.
I have seen my geophagus nose corydoras out of the way, quickly change direction- just to get them out of their way. I have seen them also do quick bursts of dominance at other cichlids--like against my biotodoma cupidos-- but very quickly. Its a quick movement that means "back off" and is over as soon as it starts. It is never a sustained harassment.
All my cichlids have been oblivious of schoolers.
This is discus, apistogramma, Altums Angels, Scalare Angels, Blue and Bolivian rams, Biotodoma Cupidos and wavarinni, and geophagus.
Now, Central American and African cichlids- that's a different story. They can express cross-species aggression. But, I havent kept them.
I am wondering if this is the breed? There isnt much out there on them, but I need to do some research. I actually will contact the breeder and see what he has to say about them.
This is a breeder/quarantine tank so its never going to be stunning- lol! Its also pretty old. But, it is in my living room an I dont want to be embarrassed when people come over for the holidays. Someday ill have a fish room where I can keep a "proper" ugly breeder tank.