Astronotus ocellatus (Agassiz, 1831)

Oscar

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Perciformes \| Cichlidae \| Astronotinae
Synonyms	Lobotes ocellatus, Astronotus ocellatus ocellatus, Acara compressus, ... more
Common names	Astronotus, Vieja, Acarahuazú, ... more

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Picture by Landines, M.

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Main reference

Page, L.M. and B.M. Burr. 1991. (Ref. 5723)
Other references | Biblio | Coordinator : Kullander, Sven O. | Collaborators

Size / Weight / Age

Max length : 45.7 cm TL male/unsexed; (Ref. 40637); common length : 24.0 cm TL male/unsexed; (Ref. 12193); max. published weight: 1,580 g (Ref. 40637)

Environment

Benthopelagic; freshwater; pH range: 6.0 - 8.0; dH range: 5 - 19

Climate / Range

Tropical; 22°C - 25°C (Ref. 1672); 4°N - 15°S, 78°W - 47°W

South America: Amazon River basin in Peru, Colombia and Brazil; French Guiana. Reported from Argentina (Ref. 9086).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 12 - 14; Dorsal soft rays (total): 19 - 21; Anal spines: 3; Anal soft rays: 15 - 17. Large mouth with thick lips; 7 preopercular pores; first gill arch without lobe; gill rakers short and thick with many denticles; dorsal and anal fins bases densely scaled; many branched rays; body color dark with bright orange opercle margin and ventral parts of the lateral sides of the body; often a black rounded blotch with orange margin at caudal fin base (Ref. 35237).

Preferably inhabits quiet shallow waters in mud-bottomed and sand-bottomed canals and ponds (Ref. 5723). Feeds on small fish, crayfish, worms and insect larvae. Quite popular with aquarists but not for aquaculturists because of its slow growth (Ref. 35237). Maximum length 40 cm TL (Ref. 5723). A highly esteemed food fish in South America (Ref. 44091).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Fisheries: commercial; gamefish: yes; aquarium: highly commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
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Special reports
Check for Aquarium maintenance \| Check for Species Fact Sheets \| Check for Aquaculture Fact Sheets

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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (Assuming tm<=1; Fec=300-2000)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate vulnerability (36 of 100)	Not marketed/unknown

Entered by Froese, Rainer

Modified by Luna, Susan M.

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Page last modified by : elaxamana, 15 July 2009

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