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Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Benthobatis: Greek, benthos = depth of the sea + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335).
Eponymy: Dr Gerhard Krefft (1912–1993) was a German ichthyologist and herpetologist whose great uncle was Johann Ludwig Gerard Krefft (below). [...] (Ref. 128868), visit book page.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
laut batidemersal; kisaran kedalaman 420 - 527 m (Ref. 57911). Deep-water; 20°S - 45°S, 55°W - 40°W (Ref. 57911)
Southwest Atlantic: off southern Brazil.
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 30.0 cm TL jantan/; (Ref. 57911)
Deep water species on the continental slope. Feeds on worms, isopods and amphipods. The late-term embryos seem to gestate in a combined uterine/cloacal chamber. Produces up to 2 pups during each pregnancy. Maturity size of males at ca. 15 cm TL, females at 20 cm TL; birth size at ca. 10 cm TL. It is reported to be locally abundant as many individuals have been collected together in a single trawl (Ref. 114953).
There are indications that this species is ovovivipar (Ref. 57911).
Eschmeyer, W.N. (ed.), 2003. Catalog of fishes. Updated database version of March 2003. Database dump. Catalog databases as made available to FishBase in March 2003. (Ref. 46206)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: tidak ada kepentingan
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Suhu yang disukai (Acuan
123201): 3.3 - 15.6, mean 6.9 °C (based on 37 cells).
Indeks keanekaragaman filogenetik (Acuan
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).
Tingkat Trofik (Acuan
69278): 3.2 ±0.46 se; based on food items.
Daya lenting (Acuan
120179): sangat rendah, Waktu penggandaan populasi minimum lebih dari 14 tahun (Fec=1-2).
Kerentanan Penangkapan Ikan (Ref.
59153): Low vulnerability (20 of 100).
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