Akawaio penak

Akawaio penak Maldonado-Ocampo, López-Fernández, Taphorn, Bernard, Crampton & Lovejoy, 2013

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drawing shows typical species in Hypopomidae.

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> Gymnotiformes (Knifefishes) > Hypopomidae (Bluntnose knifefishes)
Etymology: Akawaio: Named for Akawaio Amerindians that populate the region of the upper Mazaruni and to recognize their valuable help while studying the fishes of their lands. A masculine nounpenak: From the Akawaio name ‘penak’, which is apparently used unambiguously for this species. A masculine noun in apposition.
Eponymy: The Akawaio Amerindians who live in the region of the upper Mazaruni River, Guyana, were thanked for their valuable help while the describers studied the fishes of their territory. (Ref. 128868), visit book page.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

; zoet water benthopelagisch. Tropical

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South America: endemic to the upper Mazaruni River in Guyana.

Grootte / Gewicht / Leeftijd

Maturiteit: Lm ?  range ? - ? cm
Max length : 21.7 cm TL mannelijk / geslacht onbekend; (Ref. 94087)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Anale zachte stralen: 173 - 199. Can be diagnosed by the following characters: coracoid with a foramen; opercle with concave posterior margin; one ossified basibranchial; absence of postpectoral or humeral accessory electric organs; 14 total pectoral-fin rays (ii-iii) (shared with ranges of some Brachyhypopomus species0; 173-199 anal-fin rays (shared with ranges of few species of Brachyhypopomus and Microsternarchus); snout length 24.7-32.6% HL; five pectoral radials, in some individuals four partially fused to five (shared with Hypopomus species); mesopterygoid with short or reduced ascending process (shared with Microsternarchus species); mesocoracoid bridge absent (shared with most species of Brachyhypopomus, Microsternarchus and Racenisia); and 17 precaudal vertebrae (shared with some Brachyhypopomus species) (Ref. 94087).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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Maldonado-Ocampo, J.A., H. López-Fernández, D.C. Taphorn, C.R. Bernard, W.G.R. Crampton and N. Lovejoy, 2013. Akawaio penak, a new genus and species of Neotropical electric fish (Gymnotiformes, Hypopomidae) endemic to the upper Mazarumi River in the Guiana Shield. Zoologica Scripta (Ref. 94087)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))

  Bedreigd (EN) (B1ab(iii)+2ab(iii)); Date assessed: 14 December 2022

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

FAO - Publication: search | FishSource |

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(Ref. 82804)
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00372 (0.00143 - 0.00967), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau
(Ref. 69278)
3.2   ±0.4 se; based on size and trophs of closest relatives
Kwetsbaarheid van de visserij
(Ref. 59153)
Low vulnerability (11 of 100). 🛈