Scientific Name
Ageneiosus inermis

Common Name
Manduba

Biology
Anal soft rays: 34 - 40; Vertebrae: 46 - 51. Body naked and elongated. Head is pointed and depressed at the top. Mouth is big and wide. The lateral eyes are situated along the level of the mouth, ensuring a vision above and below. Exhibits sexual dimorphism, like A. dentatus. The first ray of the dorsal fin is very long and has pointed spines (Ref. 35381).

Classification

Classified By

Linnaeus, 1766

Class

Ray-finned fishes (Actinopterygii)

Order

Catfish (Siluriformes)

Family

Driftwood catfishes (Auchenipteridae)

Distribution

Region

South America

Distribution

South America: Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Suriname, and Venezuela (Ref. 37098). Reported from Uruguay (Ref. 54736).

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

22 °C

Water Temperature To

24 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

pelagic

Environment

Freshwater; ; pH range: 6.5 - 7.8; dH range: ? - 20 pelagic

Trophic Level

3.98 s.e. 0.66 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

59.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5002 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: public aquariums

Vulnerability

Low to moderate vulnerability (28 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=2-4, Fec>1000)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated