Pervagor alternans (Ogilby, 1899)
Yelloweye filefish
photo by Randall, J.E.

Family:  Monacanthidae (Filefishes)
Max. size:  16 cm TL (male/unsexed)
Environment:  reef-associated; marine; depth range - 15 m
Distribution:  Western Pacific: east coast of Australia, Lord Howe Island, New Caledonia, and the Marshall Islands. Recently recorded from Tonga (Ref. 53797). Described as an antitropical species.
Diagnosis:  Dorsal spines (total): 1-2; Dorsal soft rays (total): 31-34; Anal spines: 0-0; Anal soft rays: 27-31; Vertebrae: 19-19. A strong first dorsal spine armed with 2 rows of prominent, laterally-directed barbs. Posterior margin of ventral flap not attached to large and barbed pelvic rudiment. Distinguished by a bright yellow ring around the eye (Ref. 1602). Head and body blackish brown to pale, pinkish brown; blackish band usually encircling the snout; eyes and surrounding area bright yellow. Caudal fin generally orange; soft dorsal and anal fins spotted, clear or yellowish orange basally; pectoral fins clear, base blackish brown. Scales on posterior half of body with spinules, number increasing with age; adult male with scale rugosities
Biology:  Uncommon species that occurs in coral and rocky reefs to a depth of about 15 m (Ref. 9710).
IUCN Red List Status: Least Concern (LC); Date assessed: 03 March 2015 Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Capuli, Estelita Emily - 10.06.91
Modified by: Garilao, Cristina V. - 09.01.97
Checked by: Capuli, Estelita Emily - 14.07.94

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 Not for publication.

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