Pollimyrus nigricans (Boulenger, 1906)

Primary tabs

EOL Text

Environment:

demersal; potamodromous (Ref. 10608); freshwater

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorPascualita Sa-a, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=11028

Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km.

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorPascualita Sa-a, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=11028

Favors the shallow mud bottom waters near fringing vegetation such as papyrus and Vossia. Feeds mainly on Caridina and caenid larvae (Ref. 9606).

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorDrina Sta. Iglesia, FishBase
SourceNo source database.

Procamallanus Infection 14. Parasitic infestations (protozoa, worms, etc.)

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorAllan Palacio, FishBase
Sourcehttp://www.fishbase.org/Diseases/diseasesList.cfm?ID=11028&StockCode=11352

IUCN Red List Assessment:
Red List Category

LC
Least Concern

Red List Criteria

Version

3.1

Year Assessed

2006

Assessor/s

Twongo, T.K.

Reviewer/s

Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Programme)

Contributor/s

Justification

Wide distribution although rarely encountered. No major threats identified to impact on the whole population.
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/60350

Population:

Population

Rarely encountered but may be locally very abundant.

Population Trend

Unknown
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/60350

Threats:

Major Threats

Introduced fish species have possibly contributed to the decline of the species; loss of Papyrus swamps and other vegetated wetlands around rivers and lakes due to agriculture extension.
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/60350

Least Concern (LC)

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorPascualita Sa-a, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=11028

Conservation Actions:

Conservation Actions

No information available.
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorInternational Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/60350

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).

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorPascualita Sa-a, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=11028
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith