Royal escolar (Rexea prometheoides)

Scientific name: Rexea prometheoides Bleeker, 1856

Royal escolar (Rexea prometheoides)

The Royal escolar (Rexea prometheoides) is a marine fish of the family Gempylidae.

Biology

Dorsal spines (total): 19 - 20; Dorsal soft rays (total): 14-17; Anal spines: 2; Anal soft rays: 12 - 15; Vertebrae: 34. Lateral line branching below the 4th to the 5th spine of the first dorsal fin; the upper branch reaching the middle to end of the second dorsal-fin base; the lower branch running mid laterally. Body naked except for a large scaly patch extending around the posterior portion of the lower lateral line. The pelvic fin is represented by a single spine in smaller specimens but is entirely absent in specimens over 18 - 20 cm SL. Body color is grayish with silvery tint; the fins hyaline except for the black blotch on the fin membranes between the first and the third first dorsal spines.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Rexea prometheoides
Family
Gempylidae (Snake mackerels)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
40.0
Depth range
135–540 m (443–1772 ft)
Environment
Marine; benthopelagic; depth range 135 - 540 m
Climate
Tropical
Distribution
Indo-West Pacific: off Mozambique, Kenya, Reunion, Saya de Malha Bank, north Australia, Indonesia, Viet Nam, Philippines, Ryukyu Islands, and southern Japan. Reported from Fiji and Tuvalu.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries: commercial
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (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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