Scientific Name
Osteoglossum bicirrhosum

Common Name
Arawana

Biology
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.

Classification

Classified By

Cuvier, 1829

Class

Ray-finned fishes (Actinopterygii)

Order

Bony tongues (Osteoglossiformes)

Family

Arowanas (Osteoglossidae)

Distribution

Region

South America

Distribution

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

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

24 °C

Water Temperature To

30 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; benthopelagic

Trophic Level

3.39 s.e. 0.48 Based on food items.

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

90.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.7539 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial; gamefish: yes; aquarium: commercial

Vulnerability

Moderate vulnerability (39 of 100)

Resilience

Unknown

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated