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Scombriformes (Mackerels) >
Gempylidae (Snake mackerels)
Etymology: Rexichthys: Latin, rex, rego = king + Greek, ichthys = fish; johnpaxtoni: Named in honor of John R. Paxton, curator of the collection of fishes of the Australian Museum in Sydney (Ref. 44066).
Eponymy: Dr John Richard Paxton (d: 1938) is an American-born Australian ichthyologist. [...] (Ref. 128868), visit book page.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino benthopelagico; distribuzione batimetrica 270 - 470 m (Ref. 9784). Deep-water; 17°S - 35°S, 140°E - 170°W (Ref. 6181)
Western Pacific: eastern coast of Australia between 17°31'S and 32°34'S, and from New Caledonia.
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Max length : 22.0 cm SL maschio/sesso non determinato; (Ref. 6181)
Spine dorsali (totale) : 19; Raggi dorsali molli (totale) : 14 - 15; Spine anali: 2; Raggi anali molli: 12 - 13; Vertebre: 34. Body moderately elongate and compressed. Two lateral lines, the lower originating below the 6th to the 7th spine of the first dorsal fin, descending sharply to ventral contour of body, dividing into a short anterior branch and a much longer posterior branch. The pelvic fin represented by 1 spine and 2 tiny soft rays in smaller specimens but entirely absent in specimens over 10 cm SL. Body color is brownish, fins hyaline; first dorsal fin with a black blotch distally on two anterior membranes.
Body shape (shape guide): elongated; Cross section: compressed.
Adults are probably benthopelagic from 400 to 470 m while juveniles are pelagic from 270 to 400 m depth.
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Temperatura preferita (Fonte Biblio.
123201): 13.8 - 17.6, mean 17.2 °C (based on 13 cells).
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00169 - 0.00815), b=3.11 (2.92 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.8 ±0.5 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Assuming tmax>3).
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (17 of 100).
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![Image of Rexichthys johnpaxtoni (Paxton\](/images/thumbnails/gif/tn_Rejoh_u0.gif "Image of Rexichthys johnpaxtoni (Paxton\")
