Astronotus ocellatus, Oscar : fisheries, gamefish, aquarium

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Astronotus ocellatus (Agassiz 1831)

Oscar
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Astronotus ocellatus
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Klassifizierung / Names Namen | Synonyme | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > 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 Ökologie

; süßwasser benthopelagisch; 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

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

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

Length at first maturity / Size / Gewicht / Alter

Maturity: Lm 12.0  range ? - ? cm
Max length : 45.7 cm TL Männchen/unbestimmt; (Ref. 40637); common length : 24.0 cm TL Männchen/unbestimmt; (Ref. 12193); max. veröff. Gewicht: 1.6 kg (Ref. 40637)

Kurzbeschreibung Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt): 12 - 14; Rückenflossenweichstrahlen (insgesamt): 19-21; Afterflossenstacheln 3; Afterflossenweichstrahlen: 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).

Biologie     Fachlexikon (Englisch) (z.B. 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 Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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).

Hauptreferenz Upload your references | Referenzen | Koordinator : Kullander, Sven O. | Partner

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 Rote Liste Status (Ref. 123251)


CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

Fischereien: kommerziell; Sportfisch: ja; Aquarium: hoch kommerziell
FAO(Publication : search) | FishSource |

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Ablaichen
Spawning aggregation
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Eier
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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02455 (0.00943 - 0.06390), b=3.00 (2.78 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  2.8   ±0.32 se; based on food items.
Widerstandsfähigkeit (Ref. 120179):  hoch, Verdopplung der Population dauert weniger als 15 Monate. (Assuming tm<=1; Fec=300-2000).
Verwundbarkeit (Ref. 59153):  Moderate vulnerability (36 of 100) .
Preiskategorie (Ref. 80766):   Unknown.