Astronotus ocellatus, commonly known as the Oscar fish, is a species of cichlid native to the slow-moving waters of the Amazon basin. They are notable for their striking color patterns, including a distinctive eye-like spot on their dorsal fin. Oscars are intelligent, social fish that exhibit curious behavior and can recognize their owners.

Astronotus ocellatus, commonly known as the Oscar fish, is native to South America. It is predominantly found in the Amazon River basin, including the countries of Brazil, Peru, Colombia, and French Guiana.

Oscars inhabit slow-moving waters with warm temperatures ranging from 22°C to 28°C (72°F to 82°F). They are typically found in rivers, floodplains, and swamps that have soft, sandy, or muddy substrates.

Oscar fish are carnivorous and occupy a niche as both predators and scavengers. They feed on smaller fish, insects, crustaceans, and plant matter. Their habitat often includes submerged vegetation and fallen branches, which provide cover and hunting grounds.