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Siganus fuscescens (Houttuyn, 1782)

Mottled spinefoot
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Siganus fuscescens   AquaMaps   Data sources: GBIF OBIS
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Image of Siganus fuscescens (Mottled spinefoot)
Siganus fuscescens
Picture by Kuiter, R.H.


Chinese Taipei (Taiwan) country information

Common names: [No common name]
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: | Ref:
Aquaculture: commercial | Ref: Liao, C.-I., H.-M. Su and E.Y. Chang, 2001
Regulations: | Ref:
Uses: no uses
Comments: Known from northern, southern, and western Taiwan (including Tung-hsiao, Yun-gan (Ref. 43515) and Hsiao-liu-chiu) and from the Penghu (Ref. 55073), Lanyu, and Green islands (Ref. 48451). The first successful larviculture in Taiwan occurred in 1996 (Ref. 40297). Also Ref. 11230, 36073, 43515.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/tw.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Woodland, D.J., 1990
National Database: The Fish Database of Taiwan

Common names from other countries

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

> Acanthuriformes (Surgeonfishes) > Siganidae (Rabbitfishes)
Etymology: Siganus: Latin, siganus = a fish, rabbit fish; by the similarity of the nose (Ref. 45335).

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

marinhas; estuarina associadas(os) a recifes; oceanódromo (Ref. 51243); intervalo de profundidade 1 - 50 m (Ref. 9813).   Tropical; 42°N - 37°S, 90°E - 171°E

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

Western Pacific: southern Korea, southern Japan, Ogasawara Islands, Taiwan, southern China, Malaysia, Singapore, Thailand, Andaman Islands, Indonesia, Philippines, Yap, Palau, Pohnpei (Caroline Islands), Solomon Islands, Papua New Guinea, Vanuatu, New Caledonia, and Australia. Often misidentified as Siganus canaliculatus (Ref. 2334).

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm 5.6  range ? - ? cm
Max length : 40.0 cm TL macho/indeterminado; (Ref. 9813); common length : 25.0 cm TL macho/indeterminado; (Ref. 9813)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 13; Raios dorsais (total) : 10; Espinhos anais: 7; Raios anais : 9; Vértebras: 13. Body olive green or brown above, silvery below; fish frequently with a dark patch below origin of lateral line. Adults become mottled when frightened. Slender, pungent, venomous spines. Preopercular angle 89°-95°. Lower half to 2/3 of cheeks commonly covered with weak, scattered scales. Midline of thorax between pelvic ridges. Differs from S. argenteus in details of coloration and less deeply forked tail (Ref. 37816).

Biologia     Glossário (p.ex. epibenthic)

Inhabits algal and seagrass flats and shallow lagoon and coastal reefs (Ref. 9710, 11230). Forms schools. Mainly diurnal. Juveniles feed on filamentous algae, adults feed on leafy algae and seagrasses (Ref. 9710). Commercially cultured in Japan. Commonly found in large estuaries (Ref. 9002). Anterolateral glandular groove with venom gland (Ref. 57406).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

In Belau, ripe individuals form prespawning congregations of 30-60 individuals in shoal areas of inner reef flats; spawning occurs on the 4th or 5th day of the new moon; spawning sites are near reef edge. About 300,000 eggs/female at a single spawning. Individuals that spawn in consecutive yrs. & that 2+ yr. class fish could spawn more than once in a single season. Aug (Ref 1754) in Belau.

Referência principal Upload your references | Referências | Coordenador : Woodland, David J. | Colaboradores

Woodland, D.J., 1990. Revision of the fish family Siganidae with descriptions of two new species and comments on distribution and biology. Indo-Pac. Fish. (19):136 p. (Ref. 1419)

Status na Lista Vermelha da UICN (Ref. 130435)

  Segura ou pouco preocupante (LC) ; Date assessed: 10 March 2015

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Venomous (Ref. 4716)




Uso pelos humanos

Pescarias: espécies comerciais; Aquacultura: espécies comerciais
FAO(Publication : search) | FishSource |

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Trophic ecology
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Ecology
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Estimates based on models

Preferred temperature (Ref. 115969): 22.6 - 29, mean 27.9 (based on 760 cells).
Índice de diversidade filogenética (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.00826 - 0.02009), b=2.99 (2.86 - 3.12), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  2.0   ±0.1 se; based on diet studies.
Resiliência (Ref. 120179):  Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (21 of 100).
Categoria de preço (Ref. 80766):   High.