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Gymnotiformes (Knifefishes) >
Apteronotidae (Ghost knifefishes) > Apteronotinae
Etymology: Apteronotus: Greek, apteros = without wings / (in this cases, fins) + Greek, noton = back (Ref. 45335); pemon: Named in reference to the Pemon indigenous group whose traditional lands included much of the Rio Caroni basin (Ref. 93867).
Eponymy: The Pemon are an eastern Venezuelan Amerindian tribe, whose traditional territories included the localities of the holotypes of these species. (Ref. 128868), visit book page.
Taxonomic Remarks
The report of A. leptorhynchus from the Río Claro, a left bank tributary of the lower Río Caroni and from Gran Sabana region of the upper Rio Caroni basin may be based on samples of A. pemon, which is the only member of the species-group known from that river system (Ref. 93867).
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
; Água doce bentopelágico. Tropical
South America: Venezuela.
Tamanho / Peso / Idade
Maturidade: Lm ? range ? - ? cm
Max length : 20.6 cm TL macho/indeterminado; (Ref. 93867)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Raios anais : 152 - 160; Vértebras: 63 - 82. This species can be distinguished from its congeners by the following set of characters: A 152-160; P 16; C 18-20; precaudal vertebrate 18-19; total vertebrae 63-82; 5th infraorbital present as a tubular laterosensory canal segment; interobital distance 9.7-14.6% of HL; number of scales along the lateral line 74-83; ossified lateral ethmoid; number of scales above the lateral line at the midbody 9-10; mouth length 30-44.5% of HL; tail length 13.0-17.5% of LEA; tail depth 9.9-15.4% of CL; ocular diameter 4.0-6.3% of HL. Colouration: body and head brown; distinct, broad, light coloured longitudinal band extending from chin along dorsal midline of head and body to beginning of dorsal filament; pectoral- and anal-fin rays dark brown with translucent interradial membranes; light band encircling base of caudal fin; caudal fin pale at base, dark brown posteriorly (Ref. 93867).
Cross section: compressed.
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
de Santana, C.D. and R.P. Vari, 2013. Brown ghost electric fishes of the Apteronotus leptorhynchus species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00146 - 0.00863), b=3.06 (2.85 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Vulnerabilidade da pesca (Ref.
59153): Low vulnerability (11 of 100).
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