Ranges widely around coral reefs in school. Feeds on zooplankton in midwater aggregations. Oviparous, with numerous, small pelagic eggs . Easily recognized from a distance by the bright yellow marking . Also caught by drive-in nets.
Dorsal spines (total): 10; Dorsal soft rays (total): 14 - 16; Anal spines: 3; Anal soft rays: 12. Body blue-green to reddish dorsally, lighter ventrally; above pectoral fin is a large yellow blotch of variable size, roughly rhomboid in shape, the oblique side slanting anteriorly. 4 scales on cheek; 22-27 predorsal scales; scaled dorsal and anal fins; Upper peduncular scale rows usually 11-13 (11-14); lower peduncular scale rows usually 15 or 16 (15-17). Supra-temporal band of scales confluent at dorsal midline. basioccipital with a broad, flat process for attachment of Baudelot's ligament; processes not extending much more ventrally than rim of condyle. Post maxillary with 2 processes; posterior end of maxilla tapered . Head length 3.3-3.6 in SL; body depth 3.4-4.9 in SL .: fusiform / normal; Cross section: compressed.
Behavioural data for Randall's fusilier is currently being reviewed.
Marine; reef-associated; non-migratory; depth range 1 - 30 m . Tropical; 15°N - 9°S, 94°E - 130°E West Pacific: Laccadive Archipelago to the Philippines.
zooplankton in midwater aggregations
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