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Astronotus ocellatus is a species of fish from the cichlid family known under a variety of common names including oscar, tiger oscar, velvet cichlid, or marble cichlid.[1] In South America, where the species naturally resides, A. ocellatus are often found for sale as a food fish in the local markets.[2][3] The fish can also be found in other areas including China, Australia, and the United States. Although its slow growth limits its potential for aquaculture, it is considered a popular aquarium fish.