Actually they are reported as a common species min tank size is 45 gallons,Ph neutral , 72-77 temp , Max size is 10 inches and it's Omnivorous.
This fish resembles the more common Jaguar Cichlid, and although it is territorial and can be bothersome towards tankmates, it is not as aggressive as the Jaguar. They sometimes live in slightly brackish water, and should be provided with a roomy aquarium with lots of rocks, plants and driftwood for territorial reasons