Wild-type / Common
A variant of Oscar (cichlid) (Astronotus ocellatus)

Representative Oscar (cichlid)photo — a dedicated image of this exact morph isn't available yet.
The natural dark-bodied Oscar with marbled greenish-brown flanks and the characteristic ocellus (eye-spot) at the tail base. The form found throughout the Amazon basin.
Keeper tips for this variant
These reach 12+ inches and are messy carnivores; budget a 75-gallon minimum for one and oversized filtration, and never feed feeder goldfish (thiaminase/disease risk).