About the Oscar The Wild-Type Oscar is a large, predatory cichlid fish native to South America, known for its robust oval body, large mouth, and distinctive dark green or brown coloration with mottled patterns and spots. It has large eyes with a red outline and a prominent "eyespot" (ocellus) on its dorsal fin. Wild Oscars are highly intelligent, grow up to 12-16 inches, and are popular aquarium fish despite their aggressive and territorial nature. Husbandry & Care Temperament: Semi Aggressive/Aggressive Minimum Tank Size: 55 Gallons for one adult, 75+ Gallons for more than 2 adult fish Water Temperature: 68-80 °F Water pH: 6.0-7.5 Social Group: Solitary or Small Social Groups. Will form pairs when breeding Diet: Omnivorous; Sinking Bottom Feeder Pellets, Frozen Bloodworms/Brine Shrimp, Blanched Vegetables (Spinach, Zucchini), Commercial Food for New World Cichlids Compatible with: Similar sized non-aggressive and semi-aggressive fish including Firemouth Cichlids, Silver Dollars, and Common Plecos