Astronotus ocellatus (Agassiz, 1831)

Oscar
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Native range | All suitable habitat
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Astronotus ocellatus   AquaMaps   Data sources: GBIF OBIS
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Image of Astronotus ocellatus (Oscar)
Astronotus ocellatus
Picture by Schüür, G.

Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (strålfeniga fiskar) > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Astronotinae
Etymology: Astronotus: Greek, astra = ray + Greek, noton = back (Ref. 45335).  More on author: Agassiz.

Environment: milieu / climate zone / depth range / distribution range Ekologi

; sötvatten bentopelagisk; pH range: 6.0 - 8.0; dH range: 5 - 19.   Tropical; 22°C - 25°C (Ref. 1672); 4°N - 15°S, 78°W - 47°W

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

South America: Amazon River basin in Peru, Colombia and Brazil; French Guiana. Reported from Argentina (Ref. 9086).

Length at first maturity / Size / Vikt / Age

Maturity: Lm 12.0  range ? - ? cm
Max length : 45.7 cm TL hane/ej könsbestämd; (Ref. 40637); common length : 24.0 cm TL hane/ej könsbestämd; (Ref. 12193); publicerad maxvikt: 1.6 kg (Ref. 40637)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 12 - 14; Mjukstrålar i ryggfenan (totalt): 19-21; Taggstrålar i analfenan 3; Mjukstrålar i analfenan: 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).

Biologi     Ordlista (t.ex. epibenthic)

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).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

In captivity, both male and female clean a suitable spawning site - often a flat rock , or branches, or in a circular nest excavated in shallow water (Ref. 44091). Eggs (usually numbering in the thousands, Ref. 44091) are deposited and are guarded by both parents. Egg hatch in 3 or 4 days and parent move the fry to a shallow pit in the sand where they remain for 6 or 7 days (Ref. 7020).

Main reference Upload your references | referenser | Koordinator : Kullander, Sven O. | Medarbetare

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

IUCN Red List Status (Ref. 119314)


CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: kommersiell; sportfisk: ja; Akvarium: kommersiellt viktig
FAO(Publication : search) | FishSource |

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Populärnamn
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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02344 (0.01031 - 0.05330), b=3.00 (2.79 - 3.21), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trofisk nivå (Ref. 69278):  2.8   ±0.32 se; Based on food items.
Resiliens (Ref. 69278):  Hög, lägsta populationsfördubblingstid mindre än 15 månader (Assuming tm<=1; Fec=300-2000).
Vulnerability (Ref. 59153):  Moderate vulnerability (36 of 100) .
Price category (Ref. 80766):   Unknown.