Klassifizierung / Names
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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 noun.; penak: From the Akawaio name ‘penak’, which is apparently used unambiguously for this species. A masculine noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; süßwasser benthopelagisch. Tropical
South America: endemic to the upper Mazaruni River in Guyana.
Size / Gewicht / Alter
Maturity: Lm ?  range ? - ? cm
Max length : 21.7 cm TL Männchen/unbestimmt; (Ref. 94087)
Kurzbeschreibung
Morphologie | Morphometrie
Afterflossenweichstrahlen: 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).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
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)
IUCN Rote Liste Status (Ref. 130435)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Mehr Information
NamenSynonymeMetabolismusRäuberÖkotoxikologieFortpflanzungGeschlechtsreifeAblaichenSpawning aggregationFecundityEierEientwicklung
Alter/GrößeWachstumLänge-GewichtLänge-LängeLängenhäufigkeitenMorphometrieMorphologieLarvenLarven Pop.Dyn.RekrutierungDichteBRUVS
ReferenzenAquakulturAquakultur ProfilZuchtlinienGenetikElectrophoresesVererbbarkeitKrankheitenVerarbeitungNutrientsMass conversion
PartnerBilderStamps, Coins Misc.LauteCiguateraGeschwindigkeitSchwimmstilKiemenoberflächeOtolithsGehirngrößeSehfähigkeit
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00199 - 0.01914), b=3.06 (2.81 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).