Elasmobranchi (squali e razze) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Hemigaleidae (Weasel sharks)
Etymology: Chaenogaleus: chaeno-, from chaino (Gr.), gape, referring to “rictus as long as wide”; galeos, a small shark or dogfish per Aristotle (sometimes translated as weasel, hence the name Weasel Sharks, possibly referring to the pointed snouts, swift movements and/or rapacious feeding behavior of smaller predatory sharks1), but in this case probably an allusion to Hemigaleus, original genus of C. macrostoma (See ETYFish); macrostoma: macro-, from makros (Gr.), large or long; stoma (Gr.), mouth, referring to long, greatly arched mouth compared with Hemigaleus microstoma, its presumed congener at the time (See ETYFish).
More on author: Bleeker.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino demersale; distribuzione batimetrica ? - 59 m (Ref. 244). Tropical; 30°N - 10°S
Indo-West Pacific: Persian Gulf (Ref. 13567), Pakistan, India, Sri Lanka, Singapore, Thailand, Viet Nam, China, Taiwan, Java and Sulawesi in Indonesia. This name has been used indiscriminately for the three species of hemigaleids in Indo-Pakistani waters other than Hemipristis elongatus.
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 82.5, range 68 - 97 cm
Max length : 100.0 cm TL maschio/sesso non determinato; (Ref. 244)
Spine dorsali (totale) : 0; Spine anali: 0. Bronzy-grey above, white below when fresh, fading to greyish or greyish brown in preservation, dorsal fins often with dusky or black tips (Ref. 13567).
Body shape (shape guide): elongated.
A common inshore and offshore shark found on the continental and insular shelves (Ref. 13567). Probably feeds on small fishes, cephalopods, and crustaceans (Ref. 244). Viviparous (Ref. 50449). Caught irregularly by inshore gillnet fisheries and occasionally by small-scale longlining (Ref.58048). Probably taken by artisanal fisheries wherever it occurs (Ref. 13567). Utilized fresh for human consumption and by-products processed into fishmeal (Ref. 244).
Viviparous (with a yolk-sac placenta), with 4 young in a litter (Ref. 244). Size at birth at least 20 cm (Ref. 244). Distinct pairing with embrace (Ref. 205).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Usi umani
Pesca: scarso interesse commerciale
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Temperatura preferita (Fonte Biblio.
123201): 25 - 29.3, mean 28.4 °C (based on 1082 cells).
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 1.0039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00216 - 0.00423), b=3.04 (2.95 - 3.13), in cm total length, based on LWR estimates for this species (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 4.2 ±0.57 se; based on food items.
Resilienza (Fonte Biblio.
120179): Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Fec=4).
Vulnerabilità della pesca (Ref.
59153): High vulnerability (60 of 100).
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