Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Siganidae
Etymology: Siganus: Latin, siganus = a fish, rabbit fish; by the similarity of the nose (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 3 - 5 m (Ref. 1419). Tropical
Eastern Indian Ocean: off the northwestern coast of Western Australia (Ningaloo Reef complex; North West Cape; Murion Islands; Rosemary Islands, Dampier Archipelago).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 25.0 cm TL male/unsexed; (Ref. 9710)
soft rays: 9;
Vertebrae: 13. Sides of body and fins bright yellow with orange cast; 3 chocolate brown patches on upper half of body below spinous part of dorsal fin; head, thorax, ventral margin of body, upper half of sides, and caudal peduncle with blue pinhead-sized ocelli, with deep blue margin; ocelli also present within the 3 patches; fins may be invaded basally by blue ocelli. Brown smudge running diagonally through eye; yellow lips; dusky yellow iris. Fin and nape spines fairly stout, pungent, and venomous. Midline of thorax and pelvic ridges fully scaled.
Strictly corallophilic, pairs living in area rich in hard coral, particularly Acropora.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 15.7 - 28.5, mean 18.5 °C (based on 232 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01622 (0.00713 - 0.03687), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (16 of 100) .