Rexea prometheoides

Royal escolar
Characteristic features:

Head and body greyish with a silver sheen; fins pale except black blotch on anterior of first dorsal fin.


Up to 45 cm TL.


Indo-West Pacific in deep, tropical waters.


Benthopelagic, from 135 to 540 m depth.


Feeds on fishes, crustaceans, and cephalopods.

Similar species:

Rexea bengalensis
Bengal escolar

Rexea bengalensis

Rexea bengalensis differs in being completely scaleless (vs. posterior body with a patch of scales encompassing lower lateral line); pelvic fin spines very short in adults (vs. short in specimens <20 cm SL, absent in specimens > 20 cm SL); base of first dorsal fin 2.7 to 3.4 times longer than base of second dorsal fin (including finlets) (vs. 2.2 to 2.6 times longer) and lateral line bifurcating below 5th to 6th first dorsal-fin spine (vs. 4th to 5th spine).

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