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Library > Cichlids > General Articles > Taxonomy of Cichlids > Sub Family Astronotinae
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Genus Astronotus
Scientific classification
Kingdom : Animalia
Phylum : Chordata
Class : Actinopterygii
Order : Perciformes
Suborder : Labroidei
Family : Cichlidae
Sub Family : Astronotinae
Genus   Astronotus




Astronotus is a genus of South American fish from the family Cichlidae.
The genus is one of three genera which make up the tribe Chaetobranchini.
There are two species in the genus , both of which are found in the Amazon Basin, while one of two also is found in the Paraná and Paraguay rivers.
Astronotus species grow to 35 cm in size, and are monomorphic.

They are opportunistic omnivores and consume a range of smaller fish, crustaceans, mollusks and other invertebrates in the wild.

One species, the Oscar (Astronotus ocellatus), is popular in the aquarium trade. A. ocellatus forms monogamous pairs which spawn in the open, typically on a flattened stone or in a shallow depression. The juvenile coloration is different from that of the adult and may aid in camouflage of the fry. In contrast, A. crassipinnis is rarely exported and is not seen often in the aquarium trade.




There are currently two following species in this genus.


Scientific Name :
Astronotus ocellatus
Common Name : Oscar
Origin : Rio Ucayali drainage & upper Amazon river of Peru and Brazil
Habitat : Benthopelagic,Slow moving waters with sunken logs and roots
Diet : Carnivore
Breeding: Substrate Spawner
Standard Length: 14
Total Length:
Scientific Name :
Astronotus crassipinnis
Common Name :
Origin : Near Rio Paraguay, Villa Maria and Caisara, Rio Guaporé close to Matogrosso, Rio Negro, and Rio Branco
Habitat : Benthopelagic
Diet : Carnivore
Breeding: Substrate Spawner
Standard Length: 9"
Total Length: 11"



  Sandeep Raghuvanshi
Picture Credits   Wikipdeia and other sources which have releases under GNU, unless soecifically credited
CITATIONS/FURTHER READING   Froese, R. and D. Pauly. Editors. 2011.FishBase. World Wide Web electronic publication., ( 10/2013 )