Actinopteri (ray-finned fishes) > Eupercaria/misc
(Various families in series Eupercaria) > Caesionidae
(Fusiliers) > Gymnocaesioninae
Etymology: Gymnocaesio: Greek, gymnos = naked + Latin, caesius, bluish-grey, 1835; it is the same name given to the silvery metal (Cs) (Ref. 45335). More on author: Bleeker.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; non-migratory; depth range - 500 m (Ref. 402), usually - m (Ref. ). Tropical; 0°C - ; 31°N - 30°S, 32°E - 177°W (Ref. 402)
Indo-West Pacific: Red Sea and East Africa to Fiji, north to the Philippines.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 18.0 cm TL male/unsexed; (Ref. 402)
Inhabits coastal areas around coral reefs (Ref. 30573). Feeds on zooplankton in large midwater aggregations. Forms schools with members of the genus Pterocaesio. Oviparous, with numerous, small pelagic eggs (Ref. 402). Often mistaken for juveniles and easily overlooked because of small size (Ref. 48636). Also caught with drive-in nets. Utilized as tuna bait fish (Ref. 30573).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Carpenter, K.E., 1987. Revision of the Indo-Pacific fish family Caesionidae (Lutjanoidea), with descriptions of five new species. Indo-Pac. Fish. (15):56 p. (Ref. 1723)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: minor commercial; bait: usually
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 15 - 27.8, mean 23.6 °C (based on 824 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.45 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (42 of 100) .
Nutrients (Ref. 124155
): Calcium = 50.4 [27.3, 85.4] mg/100g ; Iron = 0.637 [0.361, 1.050] mg/100g ; Protein = 18.7 [17.7, 19.8] % ; Omega3 = 0.165 [0.102, 0.265] g/100g ; Selenium = 25.3 [12.5, 49.5] μg/100g ; VitaminA = 295 [102, 882] μg/100g ; Zinc = 1.32 [0.89, 1.96] mg/100g (wet weight);