Scientific name: Astronotus ocellatus
Common names Oscar fish, oscar cichlid, tiger oscar, velvet cichlid, marble cichlid
Distribution: South America (Argentina, Brazil, Colombia, Paraguay, Peru, Uruguay, and Venezuela)
Size: 10–12 inches
Life expectancy: 15–20 years
Color: Orange and black/brown marbled colors
Diet: Omnivore
Temperament: Aggressive
Minimum tank size: 55 gallons
Temperature: 74–81°F (23–27°C)
pH: 6–8
Hardness: 5–20 dGH
Care level: Moderate
Breeding: Egg depositor

Origin
The oscar fish is found in parts of South America, including Argentina, Brazil, Colombia, Paraguay, Peru, Uruguay, and Venezuela. The fish swim throughout the freshwater Amazon and Orinoco Rivers and tributaries, enjoying the warm water temperatures and moderate-to-fast currents of these biodiverse environments.

Varieties of oscar fish have been bred in and introduced to other parts of the world, including Africa, Southern Asia, and North America. Oscar fish are also found in parts of French Guiana and Suriname.

Wild populations of oscar fish are common, and the fish are classed as non-extinct.

Adult Size & Lifespan
Full-grown oscar fish reach up to 12 inches in length. In the wild, oscar fish grow even longer, reaching lengths of up to 14 inches.

Oscar fish are monomorphic, which means there are no obvious differences between males and females in size or physical appearance.

In captivity, oscar fish live between eight and 15 years. In the wild, the fish live up to 20 years. Males and females have the same average lifespans.

Availability
Oscar fish are easy to find for sale in pet stores and online. The typical cost of an oscar fish is $12–$15 per fish.

These fish prefer to be housed in at least a pair. The upfront cost of two oscar fish is around $30.

You can buy oscar fish (called “tiger oscar”) and albino oscar fish at liveaquaria.
Feel Betta Indonesia is another reputable online store that sells standard and special variations of oscar fish