Singapore country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 13567.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sn.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database:

Common names from other countries

Milandre faucille, Comadreja segadora, 犁鳍半条鲨, ... more

Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (tubarões e raias) (sharks and rays) > Carcharhiniformes (Ground sharks) > Hemigaleidae (Weasel sharks)
Etymology: Hemigaleus: hemi-, from hemisys (Gr.), half, referring to similarity to and/or close affinity with Galeus (now in Pentanchidae). (See ETYFish); microstoma: micro-, from mikros (Gr.), small; stoma (Gr.), mouth, referring to very short arched mouth compared with Chaenogaleus macrostoma, its presumed congener at the time. (See ETYFish).
More on author: Bleeker.

Issue
Specimens from Australia (and probably Papua New Guinea) are placed in Hemigaleus australiensis White, Last & Compagno, 2005 (Ref. 56150).

Environment: milieu / climate zone / depth range / distribution range Ecologia

marinhas demersal. Tropical; 22°C - 28°C (Ref. 244); 28°N - 30°S

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Indo-West Pacific: southern India and Sri Lanka; China to Indonesia (Ref. 56150). Also from Red Sea (Ref. 93009).

Specimens found in Australia (and probably Papua New Guinea) belong to a separate species, Hemigaleus australiensis (Ref. 56150).

Length at first maturity / Tamanho / Peso / Idade

Maturity: L_m ?, range 78 - ? cm
Max length : 114 cm TL macho/indeterminado; (Ref. 58048)

Descrição breve Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 0; Espinhos anais: 0. Australian specimens with dark-tipped fins; tooth counts 28-34/43-54; total vertebral counts 111 to 118 (Ref. 13567). Indonesian, Singapore and Thailand specimens with light-tipped fins; tooth counts 25-32/37-43; total vertebral counts 137 to 150 (Ref. 13567). Grey-brown above, lighter below, dorsal fins with white tips and posterior margins, sometimes with spots on sides of body (Ref. 13567).

A small, relatively common inshore and offshore shark of tropical continental seas (Ref. 13567). Feeds mainly on cephalopods, particularly octopi (Ref. 13567) but also takes crustaceans and cephalopods (Ref. 244). Viviparous (Ref. 50449). Taken regularly in inshore artisanal fisheries (Ref.244), commonly caught by inshore gillnet, bottom trawl and, to a lesser extent, longline fisheries. Utilized for human consumption (Ref. 244). Offal used for fishmeal (Ref. 244).

Life cycle and mating behavior Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Viviparous, with a yolk-sac placenta; 4 to 14 fetuses in a litter (Ref. 13567); 2-4 pups after a gestation period of about 6 months; born at about 45-47 cm TL (Ref. 58048). Size of full-term fetuses (detached umbilical cords and placentae) ranges from 23.7 to 25.6 cm (Ref. 244). Distinct pairing with embrace (Ref. 205).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

Vulnerável, ver o Livro Vermelho da IUCN (VU) (A2d); Date assessed: 06 November 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

Harmless (Ref. 13567)

Utilização humana

Pescarias: pouco comercial

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 22.2 - 28.3, mean 27 (based on 816 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.7539 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00331 (0.00140 - 0.00781), b=3.06 (2.85 - 3.27), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Nível Trófico (Ref. 69278): 4.2 ±0.4 se; based on diet studies.

Resiliência (Ref. 120179): Muito baixo, tempo mínimo de duplicação da população maior que 14 anos (Fec=4).

Fishing Vulnerability (Ref. 59153): High to very high vulnerability (68 of 100).

Categoria de preço (Ref. 80766): Unknown.

Hemigaleus microstoma Bleeker, 1852