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

 Family:  Monacanthidae (Filefishes)
 Max. size:  16 cm TL (male/unsexed)
 Environment:  reef-associated; 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:   (Ref. 96402)
 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: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.


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