Astronotus crassipinnis

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Astronotus crassipinnis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cichliformes
Family: Cichlidae
Genus: Astronotus
A. crassipinnis
Binomial name
Astronotus crassipinnis
(Heckel, 1840)

Astronotus crassipinnis is a South American fish in the cichlid family from the southern Amazon basin and the ParanáParaguay basins.[1] It is not as well-known or common in the aquarium trade as its relative, the more northernly distributed oscar (A. ocellatus).[2] A. crassipinnis reaches up to 25 cm (10 in) in length.[1]


The genus name Astronotus comes from the Greek words "Astra" which means ray and "Noton" means back. The species name crassipinnis comes from the Greek words "Crassus" came from the word fat and "Pinna" means fish.[3]

In the aquarium[edit]

The species is very rare in the aquarium hobby, where they are sometimes known as "fat oscars".[3] When they appear, they are often mistaken for the common oscar (A. ocellatus).[3]


  1. ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2017). "Astronotus crassipinnis" in FishBase. January 2017 version.
  2. ^ Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Astronotus in FishBase. January 2017 version.
  3. ^ a b c "Astronotus Crassipinnis - "Fat" Oscar". Retrieved 21 July 2014.