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Torpediniformes (Electric rays) >
Narkidae (Sleeper rays)
Etymology: Narke: Greek, narke = numbness (Ref. 45335).
More on author: Gmelin.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
laut dasar (demersal); kisaran kedalaman 20 - 183 m (Ref. 6589). Subtropical; 23°S - 36°S, 13°E - 32°E (Ref. 114953)
Southeast Atlantic: Cape of Good Hope to central Natal, South Africa. Possibly occurring in Namibia, Mozambique and Madagascar (Ref. 5578, Ref. 114953).
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 38.0 cm TL jantan/; (Ref. 5578)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
Small ray with an almost circular disc and an elongated caudal fin (Ref. 5578). Yellowish-brown above with yellowish patches on upper tail, yellow with brown margins below (Ref. 5578).
Body shape (shape guide): other.
Occurs offshore on the shelf; also common on sandy and muddy bottoms at 20-115 m (Ref. 5578). Feeds mainly on polychaetes (Ref. 5578). Males reaches maturity at 18-23 cm TL, females at ca. 23 cm TL (Ref. 114953). Capable of giving a powerful shock (Ref. 5578). Incidental catch of trawlers (Ref. 5578). It is parasitised by the monogenean Electrocotyle whittingtoni in the gills (Ref. 124060).
Siklus hidup dan perilaku kawin
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva
Compagno, L.J.V., 1986. Narkidae. p. 113-114. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 6589)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
penggunaan manusia
Perikanan: komersial; Akuarium: Komersial
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan 82804) |
PD50 = 0.6252 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
Tingkat Trofik (Acuan 69278) |
3.1 ±0.26 se; based on food items. |
Daya lenting (Acuan 120179) |
Rendah, Waktu penggandaan populasi minimum 4.5 - 14 tahun (Assuming fecundity<100). |
Kerentanan Penangkapan Ikan (Ref. 59153) |
Low vulnerability (20 of 100). 🛈 |
kategori harga (Ref. 80766) |
Unknown.
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