Kyphosus vaigiensis (Quoy & Gaimard, 1825)
Brassy chub
Brassy chub,  Ilak,  Dapog,  Dayang,  Dirpak,  Hak,  Idek,  Ila,  Ilak,  Ilek,  Long-finned rudderfish,  Lupak
Kyphosus vaigiensis
photo by Allen, G.R.

Family:  Kyphosidae (Sea chubs), subfamily: Kyphosinae
Max. size:  70 cm TL (male/unsexed)
Environment:  reef-associated; depth range 0 - 40 m, oceanodromous
Distribution:  Indo-Pacific: Red Sea and East Africa south to Algoa Bay, South Africa (Ref. 6642) and east to the Hawaiian, Tuamoto, and Rapa islands.
Diagnosis:  Dorsal spines (total): 10-11; Dorsal soft rays (total): 13-15; Anal spines: 3-3; Anal soft rays: 12-14; Vertebrae: 26-26. This species is distinguished by the following characters: elongate and oval-shaped body; scale rows horizontally along the body appear alternately golden and bluish; metallic blue dorsally and white ventrally; caudal fin moderately emarginated; very low dorsal and anal fins; D X-XI,13-15; A III, 12-14; pectoral fin 17-20: teeth incisor-shaped; scales on interorbital region; external side of first gill arch with high number of gill rakers on lower limb 16-23, upper limb 5-10; total lateral line scale rows 63-80, 52-63 has pores; longitudinal scale rows 56-70; vertebrae: precaudal 10, caudal 16; pterygiophores, anal 13-14, dorsal 22-24 (Ref. 95491).
Biology:  Aggregate over hard, algal coated bottoms of exposed surf-swept outer reef flats, lagoons, and seaward reefs to a depth of at least 24 m. Found in exposed areas around rocky reefs (Ref. 559); adults usually close to the shore and the coastline, while juveniles are associated with flotsam and can be encountered in the open ocean close to the surface (Ref. 95491). Benthopelagic (Ref. 58302). Usually in groups (Ref. 90102). Young (up to 5 cm) found among floating seaweed; feeding on small crustaceans (Ref. 559). Adults are carnivorous during summer and autumn but feed on Endarachne binghamiae during winter (Ref. 559). Good food fish (Ref. 559). Minimum depth reported taken from Ref. 30573.
IUCN Red List Status: (Ref. 115185)
Threat to humans:  harmless
Country info:  Known from Romblon (Ref. 58652) and Leyte Gulf (Ref. 68980). Museum: Siluag I., CAS 45885 (Ref. 26879). Also Ref. 280, 1602, 48613, 53416.

Entered by: Capuli, Estelita Emily - 12.06.92
Modified by: Capuli, Estelita Emily - 24.05.17
Checked by: Capuli, Estelita Emily - 24.05.17

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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