Yelloweye filefish (Pervagor alternans) fish species and information / pictures of Yelloweye filefish - Pervagor alternans

Yelloweye filefish (Pervagor alternans) fish species information

Scientific Name
Pervagor alternans

Common Name
Yelloweye filefish

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

Classification

Classified By

Ogilby, 1899

Class

Ray-finned fishes (Actinopterygii)

Order

Puffers and Filefishes (Tetraodontiformes)

Family

Filefishes (Monacanthidae)

Distribution

Region

Western Pacific

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.

Range

15°N - 40°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

15 m

Depth To - meters

Unknown m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 15 - ? m

Trophic Level

2.88 s.e. 0.40 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

True

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

16.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5039 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low to moderate vulnerability (26 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated