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Siganus guttatus (Bloch, 1787)

Orange-spotted spinefoot
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Native range | All suitable habitat | Point map | Year 2050
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Siganus guttatus   AquaMaps   Data sources: GBIF OBIS
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Image of Siganus guttatus (Orange-spotted spinefoot)
Siganus guttatus
Picture by Honeycutt, K.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

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

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

Marine; brackish; reef-associated; depth range 0 - 25 m (Ref. 90102). Tropical; 24°C - 28°C (Ref. 27115); 30°N - 30°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Indian Ocean and Western Pacific: Andaman Islands, Thailand, Malaysia, Singapore, Indonesia (including Irian Jaya), Viet Nam, Ryukyus, southern and eastern China, Taiwan, South China Sea, Philippines, and Palau. Replaced by Siganus lineatus to the west, south and east of the region described by the said localities.

Length at first maturity / Size / Weight / Age

Maturity: Lm 18.1, range 12 - ? cm
Max length : 42.0 cm TL male/unsexed; (Ref. 9710); common length : 25.0 cm TL male/unsexed; (Ref. 9813)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 13; Dorsal soft rays (total): 10; Anal spines: 7; Anal soft rays: 9; Vertebrae: 13. Dusky blue dorsally, silvery below; a bright yellow spot adjacent to last few rays of dorsal fin; head with lines and spots. Preopercular angle 91°-102°; strong scales fully cover the cheeks; midline of thorax scaled, not the pelvic ridges. Anterior nostril with extremely low rim, slightly expanded posteriorly. Spines stout, pungent, venomous.

Biology     Glossary (e.g. epibenthic)

Inhabits turbid inshore reefs among mangroves; tolerates or even prefers low salinities. Fry settles in seagrass beds around river mouths and adults enter and leave rivers with the tide, but also found on the drop-offs of inshore fringing reefs down to 6 m. Schools throughout life; school size for adults around 10 or 15. Feeds on benthic algae. Unlike other siganids, this species is reported to be active at night. Sold fresh in markets (Ref. 9813, 48637).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Usually spawns at midnight.

Main reference Upload your references | References | Coordinator : Woodland, David J. | Collaborators

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)

IUCN Red List Status (Ref. 130435: Version 2024-2)

  Least Concern (LC) ; Date assessed: 12 March 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Venomous (Ref. 4537)





Human uses

Fisheries: commercial; aquaculture: commercial; aquarium: commercial
FAO - Publication: search | FishSource | Sea Around Us

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Trophic ecology
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Estimates based on models

Preferred temperature (Ref. 123201): 25.4 - 29.3, mean 28.7 °C (based on 2193 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01660 (0.01302 - 0.02116), b=3.07 (3.01 - 3.13), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  2.7   ±0.30 se; based on food items.
Generation time: 0.8 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (19 of 100).
Price category (Ref. 80766):   High.
Nutrients (Ref. 124155):  Calcium = 42.8 [20.6, 111.6] mg/100g; Iron = 0.873 [0.393, 2.154] mg/100g; Protein = 19.2 [17.7, 20.8] %; Omega3 = 0.115 [0.054, 0.240] g/100g; Selenium = 30.7 [10.6, 83.4] μg/100g; VitaminA = 13.9 [3.1, 62.6] μg/100g; Zinc = 1.46 [0.56, 3.27] mg/100g (wet weight);