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Osteoglossum bicirrhosum  (Cuvier, 1829)

Arawana
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Osteoglossum bicirrhosum
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Osteoglossiformes (Bony tongues) > Osteoglossidae (Arowanas)
Etymology: Osteoglossum: Greek, osteon = bone + Greek, glossa = tongue (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; benthopelagic.   Tropical; 24°C - 30°C (Ref. 1672)

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 90.0 cm TL male/unsexed; (Ref. 50892); max. published weight: 6.0 kg (Ref. 72380)

Short description Morphology | Morphometrics

Body covered with very big scales; dorsal and anal fins almost fused with the caudal fin; 2 barbels at the extremity of the lower jaw; adult silvery, juvenile with blue glints and a yellow-orange bar (Ref. 12225).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: Amazon River basin, Rupununi and Oyapock Rivers.

Biology     Glossary (e.g. epibenthic)

Is an omnivore with a tendency to feed on fish at the surface. The superior position of the mouth allows it to capture its prey while swimming from below. Also jumps out of the water to feed on large insects (Coleoptera; Ref. 27548). It is capable of adapting to environments with low oxygen levels (Ref. 12225).

Main reference Upload your references | References | Coordinator | Collaborators

Ferraris, C.J. Jr., 2003. Osteoglossidae (Arowanas). p. 30. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil.

IUCN Red List Status (Ref. 90363)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: commercial; gamefish: yes; aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

More information

Common names
Synonyms
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Predators
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Morphometrics
Morphology
Larvae
Larval dynamics
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Heritability
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Ciguatera
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Internet sources

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7520   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  3.4   ±0.48 se; Based on food items.
Resilience (Ref. 69278):  .
Vulnerability (Ref. 59153):  Moderate vulnerability (39 of 100) .
Price category (Ref. 80766):   Unknown.