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Scombriformes (Mackerels) >
Gempylidae (Snake mackerels)
Etymology: Rexea: Latin, rex, rego = king.
Eponymy: Dr Izumi Nakamura (1939–2021) was a Japanese ichthyologist at the Kyoto University Aquatic Natural History Museum’s Maizuru Fisheries Research Station and an expert on billfishes. [...] (Ref. 128868), visit book page.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
laut bentopelagis; kisaran kedalaman 340 - 370 m (Ref. 6181). Deep-water; 34°N - 18°S, 53°E - 154°W (Ref. 6181)
Indo-West Pacific: Nazareth Bank and off Sumatra in the Indian Ocean and Kyushu-Palau Ridge, Japan and off Oahu, Hawaii.
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 38.0 cm SL jantan/; (Ref. 6181)
Duri punggung (Keseluruhan (total)) : 19 - 20; duri punggung lunak (Keseluruhan (total)) : 15 - 18; Duri dubur: 2; Sirip dubur lunak: 12 - 13; vertebrata, bertulang belakang: 34. Pectoral fin is represented by a single spine in small specimens or entirely absent in individuals over 25 cm SL. Lateral line branching below the 5th to 6th spine of the first dorsal fin. The upper line reaches to the base of the first dorsal finlet, the lower line runs sub laterally. Most of the body is naked except for a large rectangular stripe of squamation extending forward from the caudal peduncle. Overall color is grayish brown; a black blotch is on membranes between the first and third dorsal-fin spine.
Body shape (shape guide): elongated; Cross section: compressed.
Mesobenthopelagic (Ref. 58302). Matures at about 25 cm standard length (Ref. 6181).
Nakamura, I. and N.V. Parin, 1993. FAO Species Catalogue. Vol. 15. Snake mackerels and cutlassfishes of the world (families Gempylidae and Trichiuridae). An annotated and illustrated catalogue of the snake mackerels, snoeks, escolars, gemfishes, sackfishes, domine, oilfish, cutlassfishes,. scabbardfishes, hairtails, and frostfishes known to date. FAO Fish. Synop. 125(15):136 p. (Ref. 6181)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan 82804) |
PD50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00363 (0.00164 - 0.00803), b=3.11 (2.92 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Tingkat Trofik (Acuan 69278) |
4.2 ±0.7 se; based on size and trophs of closest relatives |
Daya lenting (Acuan 120179) |
sedang, Waktu penggandaan populasi minimum 1.4 - 4.4 tahun (Preliminary K or Fecundity.). |
Kerentanan Penangkapan Ikan (Ref. 59153) |
Moderate vulnerability (36 of 100). 🛈 |