Elasmobranchii (tubarões e raias) (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Benthobatis: Greek, benthos = depth of the sea + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335); moresbyi: Named for Capt. Moresby of the Indian Navy.
Eponymy: Captain Robert Moresby (1794–1854) of the Indian Navy was a hydrographer, marine surveyor and draughtsman. [...] (Ref. 128868), visit book page.
More on author: Alcock.
Ambiente: milieu / zona climática / intervalo de profundidade / gama de distribuição
Ecologia
marinhas batidemersal; intervalo de profundidade 787 - 1071 m (Ref. 48493). Deep-water; 15°N - 5°N, 49°E - 77°E (Ref. 114953)
Indian Ocean: Arabian and Laccadive seas (off Travancore coast), Yemen and Somalia; including India (Ref. 118627).
Tamanho / Peso / Idade
Maturidade: Lm ? range ? - ? cm
Max length : 35.1 cm TL macho/indeterminado; (Ref. 48493); 39.2 cm TL (female)
Descrição breve
Chaves de identificação | Morfologia | Morfometria
Dark brown dorsal and ventral surfaces; ventral entirely dark. Snout elongated, usually more than 1/3 in disc length (preocular snout region 40% in disc length in lectotype). Disc oval, longer than wide. Dorsal fins with long, fleshy bases which are much longer than height of the fin (dorsal fin length 50-55% of fin height). Origin of first dorsal well anterior to posterior tip of pelvic fins, close to mid pelvic length; dorsal fins close together, interdorsal space less than length of dorsal bases. Distance between second dorsal and caudal fins much smaller than length of base of second dorsal fin. Caudal fin extremely elongated, reaching almost 1/2 tail length as measured from posterior tips of pelvic fins; caudal fin length 40.4% of distance between cloaca and caudal fin tip (Ref. 48493).
Body shape (shape guide): other.
A benthic species on continental slope. Probably suction feeds on bottom-dwelling invertebrates based on its oral morphology. Biology little known. Maturity size uncertain, probably close to 18 cm TL in males (Ref. 114953).
Ciclo de vida e comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
de Carvalho, M.R., 1999. A synopsis of the deep-sea genus Benthobatis Alcock, with a redescription of the type species Benthobatis moresbyi Alcock, 1898 (Chondrichthyes, Torpediniformes, Narcinidae). p. 231-255. In Séret B. & J.-Y. Sire [eds]. Proc. 5th Indo-Pac. Fish Conf., Noumea, 1997. (Ref. 48493)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2025-2 (Global))
Ameaça para o homem
Harmless
Utilização humana
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimativas baseadas em modelos
Temperatura preferida (Ref.
123201): 2.7 - 6.7, mean 6.3 °C (based on 5 cells).
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00470 - 0.02937), b=2.88 (2.66 - 3.10), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Assuming fecundity<100).
Vulnerabilidade da pesca (Ref.
59153): Low to moderate vulnerability (29 of 100).
🛈
