drab aeolid

About this species

Phestilla sibogae is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusk in the family Trinchesiidae. The species feeds on the hard coral genus Porites.

Text from the Wikipedia article “Phestilla sibogae”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 90 records
February: 92 records
March: 158 records
April: 118 records
May: 140 records
June: 135 records
July: 123 records
August: 119 records
September: 151 records
October: 127 records
November: 120 records
December: 124 records

Depth and water temperature

Depth

Mostly recorded at 6–21 m · Deepest record: 34.5 m

0–10 m: 24 records
10–20 m: 85 records
20–30 m: 28 records
30–40 m: 1 records

Water temperature

Recorded in surface water of 19–30 °C

18–20 °C: 9 records
20–22 °C: 50 records
22–24 °C: 26 records
24–26 °C: 24 records
26–28 °C: 17 records
28–30 °C: 84 records

Photos

(c) Daniel Eisenhauer, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Rodrigo Canalli, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
(c) Pauline Walsh Jacobson, some rights reserved (CC BY) · CC BY · iNaturalist
(c) 呂一起(Lyu yi-chi), some rights reserved (CC BY) · CC BY · iNaturalist
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
(c) Ewout Knoester, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist

Names and classification

English: drab aeolid, Porites-eating Nudibranch, Tropical Gasflame

Names in 3 more languages

French: Cuthona du Siboga
Japanese: ミチヨミノウミウシ
Simplified Chinese: 西寶羽螅背鰓海牛

Other scientific names: Aeolidia edmondsoni, Aeolidiella edmondsoni, Cuthona sibogae, Hervia sibogae, Tenellia sibogae, Trinchesia sibogae

Similar species

Blackgill Tenellia
Phestilla melanobrachia
Phestilla lugubris
Tenellia nakapila
Tenellia bughaw
Orange-blaze Roundhead
Tenellia ornata
Tenellia puti

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.
Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
Conservation status as published by GBIF (IUCN Red List).
303 open-data records from 1982 to 2026.
Species data updated October 26, 2026.