Actinopteri (ray-finned fishes) > Eupercaria/misc
(Various families in series Eupercaria) > Caesionidae
(Fusiliers) > Caesioninae
Etymology: Caesio: Latin, caesius, bluish-grey, 1835; it is the same name given to the silvery metal (Cs) (Ref. 45335); xanthalytos: Name from Greek, literally meaning 'yellow line'; referring to the prominent deep yellow band along the fish’s midside; noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; pelagic-neritic; depth range 8 - 40 m (Ref. 94071). Tropical
Western Indian Ocean: Kenya (purchased in Mombasa market), Tanzania (Dar es Salaam), southern Mozambique and KwaZulu-Natal (Margate, 30°51' S), southern Madagascar.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 22.0 cm SL male/unsexed; (Ref. 94071)
Morphology | Morphometrics
soft rays: 11 - 12;
Vertebrae: 23. This medium-sized species is distinguished by the following: a prominent, composite, yellow lateral band in life, bordered by irregular dark brown stripes, and with a narrow blue stripe in the yellow, above the lateral line; the lateral line is within band for most of length; 19-22 pectoral-fin rays (rarely 19 or 21, 22); 57-67 (mode 59-62) lateral line scales; 11-12 (mode 11) anal fin rays; 8 + 12 circumpeduncular scales (Ref. 94071).
This species schools with Caesio variliniata and both have been observed together in large shoals in northern KwaZulu-Natal. Prolific spawning in the Park Rynie area, KwaZulu-Natal (30°20’ S, 30°45’ E) is apparent due to abundance of eggs of this species from plankton collections (Ref. 94071).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Holleman, W., A.D, Connell and K.E. Carpenter, 2013. Caesio xanthalytos, a new species of fusilier (Perciformes: Caesionidae) from the Western Indian Ocean, with records of range extensions for several species of Caesionidae. Zootaxa 3702(3):262-272. (Ref. 94071)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.7 - 27.5, mean 26.7 °C (based on 42 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.00562 - 0.02956), b=3.09 (2.90 - 3.28), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (17 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .