Caesio xanthonota Bleeker, 1853
Yellowback fusilier
photo by Randall, J.E.

Family:  Caesionidae (Fusiliers), subfamily: Caesioninae
Max. size:  40 cm TL (male/unsexed)
Environment:  reef-associated; depth range 0 - 50 m, non-migratory
Distribution:  Indian Ocean: East Africa (not including the Red Sea or the Arabian (Persian) Gulf) to Indonesia. Records of this species from the Marshall Islands and Australia are probably misidentifications of Caesio teres.
Diagnosis:  Dorsal spines (total): 10-10; Dorsal soft rays (total): 14-15; Anal spines: 3-3; Anal soft rays: 11-12. Upper 1/3 of body and caudal fin bright yellow, middle third blue, lower white. 4-5 scales on cheek; 20-25 predorsal scales; scaled dorsal and anal fins; narrow scaleless zone interrupting the Supra-temporal band of scales at the dorsal midline. Upper peduncular scale rows 11 or 12; lower peduncular scale rows usually 15 (14-16). Presence of a small process on each ventrolateral surface of basioccipital for attachment of Baudelot's ligament. Post maxillary process single; posterior end of maxilla blunt (Ref. 1723). Head length 3.0-3.4 in SL; body depth 2.9-3.5 in SL (Ref. 90102).
Biology:  Inhabits deep lagoons and along seaward reefs (Ref. 9710), primarily around coral reefs. Feeds on zooplankton in large midwater aggregations. Oviparous, with numerous, small pelagic eggs (Ref. 402).
IUCN Red List Status: Least Concern (LC); Date assessed: 06 March 2015 Ref. (120744)
Threat to humans:  harmless
Country info:   
 

Entered by: Luna, Susan M. - 17.10.90
Modified by: Kesner-Reyes, Kathleen - 29.03.06
Checked by: Carpenter, Kent E. - 25.06.93

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