Scientific Name
Rexichthys johnpaxtoni

Common Name
Paxton's escolar

Biology
Dorsal spines (total): 19; Dorsal soft rays (total): 14-15; Anal spines: 2; Anal soft rays: 12 - 13; Vertebrae: 34. Body moderately elongate and compressed. Two lateral lines, the lower originating below the 6th to the 7th spine of the first dorsal fin, descending sharply to ventral contour of body, dividing into a short anterior branch and a much longer posterior branch. The pelvic fin represented by 1 spine and 2 tiny soft rays in smaller specimens but entirely absent in specimens over 10 cm SL. Body color is brownish, fins hyaline; first dorsal fin with a black blotch distally on two anterior membranes.

Classification

Classified By

Parin & Astakhov, 1987

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Snake mackerels (Gempylidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: eastern coast of Australia between 17?31'S and 32?34'S, and from New Caledonia.

Range

17°S - 35°S, 140°E - 170°W

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

270 m

Depth To - meters

470 m

Zone

benthopelagic

Environment

Marine; benthopelagic; depth range 270 - 470 m (Ref. 9784)

Trophic Level

3.81 s.e. 0.53 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

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

22.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0000 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 (25 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated