Royal escolar

Rexea prometheoides

Fish
IUCN: Not evaluated

Usual depth181–541 m
Water temperature17–29 °C
Best monthsMay, September, and October
How commonOccasional

All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 25 records
February: 2 records
March: 3 records
April: 18 records
May: 31 records
June: 15 records
July: 12 records
August: 18 records
September: 27 records
October: 29 records
November: 15 records
December: 16 records

Depth and water temperature

Depth

Mostly recorded at 181–541 m · Deepest record: 2,826 m

0–10 m: 1 records
10–20 m: 1 records
20–30 m: 0 records
30–40 m: 0 records
40–50 m: 0 records
50–60 m: 0 records
60–70 m: 0 records
70–80 m: 3 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 1 records
110+ m: 120 records

Water temperature

Recorded in surface water of 17–29 °C

16–18 °C: 2 records
18–20 °C: 2 records
20–22 °C: 27 records
22–24 °C: 29 records
24–26 °C: 55 records
26–28 °C: 81 records
28–30 °C: 53 records

Names and classification

English: Royal escolar, Prometheus gemfish, royal escolar, Royal Gemfish

Names in 3 more languages

French: Escolier tifiati
Japanese: Kagokamasu, カゴカマス
Simplified Chinese: 短帶鰆, 短梭, 短蛇鯖

Other scientific names: Jordanidia prometheoides, Jordanidia raptoria, Rexea promethoides, Reyea prometheoides, Thyrsites prometheoides

Similar species

Snake mackerel
Gempylus serpens

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
Conservation status as published by GBIF (IUCN Red List).
448 open-data records from 1948 to 2022.
Species data updated October 26, 2026.

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