Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Siganidae (Rabbitfishes)
Etymology: Siganus: Latin, siganus = a fish, rabbit fish; by the similarity of the nose (Ref. 45335). More on author: Forsskål.

Environment / Climate / Range Ecology

Marine; brackish; reef-associated; depth range ? - 30 m (Ref. 50672). Subtropical; 32°N - 35°S

Length at first maturity / Size / Weight / Age

Maturity: L_m 13.7 range ? - ? cm
Max length : 27.0 cm TL male/unsexed; (Ref. 50671); common length : 20.0 cm TL male/unsexed; (Ref. 30573)

Short description Morphology | Morphometrics

Dorsal spines (total): 13; Dorsal soft rays (total): 10; Anal spines: 7; Anal soft rays: 9; Vertebrae: 23. Upper body gray, green or brownish, silvery below; iris iridescent silver or golden. Body color patterns extend to the fins. Spines slender, pungent and venomous. Preopercular angle 88°-96°; cheeks scaled; midline of thorax, isthmus and midline of belly without scales. Frightened fish become mottled or with 6 diagonal zones across side. Tip of broad-based flap of anterior nostril reaching at least halfway to orifice of posterior nostril.

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

Western Indian Ocean: several localities in East Africa, and from the Red Sea to the eastern Mediterranean via the Suez Canal.

Inhabits shallow waters and generally in schools of 50 to several hundred individuals; prefers protected areas. Feeds by grazing on algae.

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.

IUCN Red List Status (Ref. 90363)

Least Concern (LC)

Threat to humans

Venomous (Ref. 4537)

Human uses

Fisheries: minor commercial; aquaculture: commercial

FAO(Aquaculture: production; ; publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01124 (-0.08144 - 0.10392), b=2.99987 (2.93765 - 3.06209), based on LWR estimates for species & genus-BS (Ref. 93245).

Trophic Level (Ref. 69278): 2.0 ±0.0 se; Based on diet studies.

Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.22, tm=1-2).

Vulnerability (Ref. 59153): Low to moderate vulnerability (32 of 100) .

Price category (Ref. 80766): High.

Siganus rivulatus Forsskål & Niebuhr, 1775