Maybe one of the genus Steatocranus?
neetroplus neematopus are very blockheaded
I'm thinking it might have been the gymnogeophagus balzanii if not then I plan to get those anyways cause I like them too and it would go nice with my SA themed tank.
Thanks for the help so far errbody! If anyone can think of anything else that looks like the gymnos please chime in!
The squarest looking CA cichlid in my opinion is an adult sajica male.