Longnose stonebasher (Gnathonemus longibarbis) fish species and information / pictures of Longnose stonebasher - Gnathonemus longibarbis

Longnose stonebasher (Gnathonemus longibarbis) fish species information

Scientific Name
Gnathonemus longibarbis

Common Name
Longnose stonebasher

Biology
Occurs in shallow inshore waters over both sandy and rocky bottoms, appearing seasonally over muddy bottoms adjacent to extensive papyrus swamps. Also found in deep water, near rocky islands. Feeds on large libellulid nymphs and other large prey (Ref. 9606). Oviparous (Ref. 205). Migrates up the river to spawn (Ref. 10608).

Classification

Classified By

Hilgendorf, 1888

Class

Ray-finned fishes (Actinopterygii)

Order

Bony tongues (Osteoglossiformes)

Family

Elephantfishes (Mormyridae)

Distribution

Region

Africa

Distribution

Africa: Lake Victoria, Lake Tanganyika, Victoria Nile (Zambeze?) (Ref. 3203).

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

27 m

Depth To - meters

45 m

Zone

demersal

Environment

Freshwater; demersal; potamodromous (Ref. 10608); depth range 27 - 45 m (Ref. 9606)

Trophic Level

3.22 s.e. 0.39 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

36.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5625 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of no interest

Vulnerability

Moderate vulnerability (39 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 502)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)