Yelloweye filefish (Pervagor alternans)

Scientific name: Pervagor alternans Ogilby, 1899

Yelloweye filefish (Pervagor alternans)

The Yelloweye filefish (Pervagor alternans) is a marine fish of the family Monacanthidae.

Biology

Dorsal spines: 1 - 2; Dorsal soft rays: 31-34; Anal spines: 0; Anal soft rays: 27 - 31; Vertebrae: 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. 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

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Pervagor alternans
Family
Monacanthidae (Filefishes)
Order
Tetraodontiformes (Puffers and Filefishes)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
16.0
Depth range
15 m (49 ft)
Environment
Marine; reef-associated; depth range 15 - ? m
Climate
Tropical
Distribution
Western Pacific: east coast of Australia, Lord Howe Island, New Caledonia, and the Marshall Islands. Recently recorded from Tonga. Described as an antitropical species.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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