Actinopteri (ray-finned fishes) > Ovalentaria/misc
(Various families in series Ovalentaria) > Pomacentridae
(Damselfishes) > Pomacentrinae
Etymology: Stegastes: Greek, stegastos, -e, -on = covered (Ref. 45335). More on author: Ogilby.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; non-migratory; depth range 1 - 30 m (Ref. 9710), usually 1 - 5 m (Ref. 9710). Tropical; 0°C - ; 40°N - 35°S, 31°E - 109°W
Indo-Pacific: East Africa to eastern Oceania, including the Hawaiian and Easter islands, north to the Ryukyu Islands, south to Australia and the New Zealand.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 16.5 cm NG male/unsexed; (Ref. 89467)
Adults inhabit rocky and coral reefs exposed to mild to moderate surge (Ref. 9710). Benthopelagic (Ref. 58302). They occur solitary among boulders (Ref. 48636). Territorial in areas where filamentous algae cover rocks and dead coral (Ref. 9710). Monogamous (Ref. 52884). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, distinct pairing during breeding (Ref. 205). Monogamous mating is observed as both facultative and social (Ref. 52884). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
Allen, G.R. and A.R. Emery, 1985. A review of the Pomacentrid fishes of the genus Stegastes from the Indo-Pacific, with descriptions of two new species. Indo-Pac. Fish. (3):31. (Ref. 510)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: minor commercial
Estimates based on models
Preferred temperature (Ref. 115969
): 18.5 - 29.2, mean 27.9 °C (based on 2466 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00674 - 0.03244), b=2.99 (2.80 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.2 ±0.1 se; based on diet studies.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (26 of 100) .
Nutrients (Ref. 124155
): Calcium = 76 [45, 146] mg/100g ; Iron = 0.842 [0.563, 1.288] mg/100g ; Protein = 18.8 [17.8, 19.7] % ; Omega3 = 0.135 [0.087, 0.205] g/100g ; Selenium = 31.1 [17.3, 55.3] μg/100g ; VitaminA = 55.8 [18.7, 168.5] μg/100g ; Zinc = 1.8 [1.3, 2.5] mg/100g (wet weight);