Pollimyrus petricolus (Daget, 1954)

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Biology:

Affinities: sympatric with P. isidori.

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorTess Cruz, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=5221

Range Description:

P. petricolus is endemic to Western Africa and known only from the upper and Middle Niger basins. The downstream limit of its distribution seems to be Lake Kainji.

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/182929

Africa: Niger River, Markala and Kainji Lake.

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorTess Cruz, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=5221

Western Africa.

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorFishWise Professional, FishWise Professional
Sourcehttp://www.fishwisepro.com/Species/details.aspx?Zoom=True&SId=54719

Dorsal spines (total): 0; Dorsal soft rays (total): 20 - 23; Analspines: 0; Analsoft rays: 23 - 26

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorMaria Lourdes D. Palomares, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=5221

Maximum size: 110 mm SL

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorFishWise Professional, FishWise Professional
Sourcehttp://www.fishwisepro.com/Species/details.aspx?Zoom=True&SId=54719

Max. size:

11.0 cm SL (male/unsexed; (Ref. 2915))

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorTess Cruz, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=5221

SL/Depth 3.7-4.8. Head 3.9-4.7 x SL, 3.6-5.2 x bigger than eye diameter. Pectoral fins 1.1-1.4 x head length, posterior end reaching origin of pelvic fins (which is 1.7-2.2 x length if pectorals). Dorsal and anal fin origins at same level. Caudal peduncle height 2.1-3.2 x of its length. Color uniformly dark, almost black (Upper Niger); Middle Niger individuals light colored with small dots of melanophores.

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorMaria Lourdes D. Palomares, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=5221

Habitat and Ecology:

Habitat and Ecology

This is a demersal species with a weak electrical discharge. It is non-migratory.

Systems

  • Freshwater
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/182929

Environment:

demersal; potamodromous (Ref. 51243); freshwater

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorTess Cruz, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=5221
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith