Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Siganidae
Etymology: Siganus: Latin, siganus = a fish, rabbit fish; by the similarity of the nose (Ref. 45335).
Environment / Climate / Range
Marine; brackish; reef-associated; depth range 20 - 50 m (Ref. 28016). Tropical; 30°N - 45°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm SL male/unsexed; (Ref. 1419); common length : 30.0 cm TL male/unsexed; (Ref. 2871); max. reported age: 3 years (Ref. 42001)
(total): 13 - 14;
soft rays: 9 - 10;
Vertebrae: 23. Coloration highly variable; influenced by substrate's color and mood of the fish. Upper greenish to sandy brown, paler below. Color patterns extend to the fins. Spines slender, pungent and venomous. Preopercular angle 88°-98°; cheeks with few scales; midline of thorax without scales between pelvic ridges. Long flap of anterior nostril shortens with increasing age.
Western Indian Ocean: Kenya to Knysna, South Africa and around islands in the western Indian Ocean. Perhaps occurring in the Gulf of Aden.
Inhabits inshore areas and inner reefs (Ref. 9710). Often occurs among seagrasses to browse on 'aufwuchs'. Forms schools. A food fish that is occasionally poisonous (Ref. 4537).
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)
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01773 (-0.11870 - 0.15415), b=3.01625 (2.93528 - 3.09721), based on LWR estimates for species & genus-BS (Ref. 93245
Trophic Level (Ref. 69278
): 2.0 ±0.00 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (tmax=2.5).
Vulnerability (Ref. 59153
): Low vulnerability (24 of 100) .