How big does an albino Oscar fish grow?

All color varieties of Oscar fish, albino included, reach a maximum adult size of 12 to 18 inches. They can reach up to 3.5 pounds in weight and require a large aquarium to accommodate their size and territorial behaviors.

Oscars are also known as velvet cichlids, tiger oscars or marbled cichlids due to their varied color patterns, which include black, red, albino, leucistic and xanthistic. They are also known by the species name Astronotus ocellatus. Oscars are South American cichlids that are found worldwide in the aquarium trade, especially in the United States. They are commonly sold for food in their native South America.