Scientific Name
Pollimyrus nigricans

Common Name
Dark stonebasher

Biology
Favors the shallow mud bottom waters near fringing vegetation such as papyrus and Vossia. Feeds mainly on Caridina and caenid larvae (Ref. 9606). Oviparous (Ref. 205). A male to female ratio of 1:10.5 has been noted for this species (Ref. 10608). Migrates up the river to spawn (Ref. 10608).

Classification

Classified By

Boulenger, 1906

Class

Ray-finned fishes (Actinopterygii)

Order

Bony tongues (Osteoglossiformes)

Family

Elephantfishes (Mormyridae)

Distribution

Region

Africa

Distribution

Africa: Lakes Victoria, Nabugabo and Kyoga; the Kiruni River (Semliki Valley), Malagarasi River and Tanganyika Lake.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Freshwater; demersal; potamodromous (Ref. 10608)

Trophic Level

3.4 s.e. 0.50 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

False

Physical Size and Genetics

Maximum Length

10.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (12 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 206)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)