Pollimyrus weyli

Pollimyrus weyli Dierickx, Lunkayilakio, Bills & Vreven, 2024

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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Etymology: Pollimyrus: Because of Dr. Max Poll, ichthyologist + Greek, myros, -ou = the male of the morey eel; weyli: Named after the late Professor Dr. Olaf L.F. Weyl (1972–†2020) (SAIAB) for his contributions to African ichthyology and his work in the Buzi River system within the framework of his PhD, expanding the collections housed at SAIAB and increasing the understanding of the biodiversity in the region.
Eponymy: Dr Max Fernand Leon Poll (1908–1991) was a Belgian ichthyologist, and ‘connoisseur of the fish fauna’. [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; pelagic; depth range 0 - 1 m (Ref. 138541). Tropical

Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: Mozambique.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 5.5 cm SL male/unsexed; (Ref. 138541)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 17; Anal soft rays: 21 - 23; Vertebrae: 38 - 39. This species is distinguished by the following characters: upper jaw wide, 22.6%-24.5% HL; caudal peduncle thick, 23.4%-23.8% BD; dorsal, anal and pectoral fins rounded; chin small; body deep, 29.6%-29.9% SL; head wide, 55.2%-58.7% HL; anal fin short, 20.2%-22.5% SL; pectoral fin short, 18.1%-19.6% SL; D 17 (Ref. 138541).
Body shape (shape guide): short and / or deep; Cross section: compressed.

Biology     Glossary (e.g. epibenthic)

The holotype was caught in a weed-filled non-flowing stream close to the main channel of the Buzi River, some 154 m a.s.l. The vegetation consisted mostly of a fine leafed Potamogeton (like Potamogeton pusillus) and a few water lilies (Nymphaea). Vegetation cover was close to 100%, where the specimen was caught by raking with a big hard-framed hand-net through the weeds. Water depth was less than 1 m with a mixed substrate of sand and rocks. The paratype, on the other hand, was caught in a lower-altitude tributary, at 138 m a.s.l., with a good flow, and completely covered over by emergent Phragmites; there was no submerged aquatic vegetation. It was collected by electrofishing with a Samus backpack at less than 1 m depth with a substrate of cobbles and banks undercut with a lot of rootstocks (Ref. 138541).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Dierickx, K., S.W. Lunkayilakio, R. Bills and E.J. Vreven, 2024. Morphometric synthesis of Pollimyrus (Teleostei, Mormyridae) with the description of four new species. J. Fish Biol. 106(3):846-892. (Ref. 138541)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.01622 (0.00679 - 0.03875), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level
(Ref. 69278) 		3.2   ±0.3 se; based on size and trophs of closest relatives
Resilience
(Ref. 120179) 		High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability
(Ref. 59153) 		Low vulnerability (10 of 100). 🛈