Fiesta Rainbow Dorid
Goniobranchus fidelis
- Usual depth4–20 m
- Water temperature19–29 °C
- Best monthsMarch, April, and August
- How commonOccasional
Photo credit: (c) 呂一起(Lyu yi-chi), some rights reserved (CC BY) · CC BY · iNaturalist
About this species
Goniobranchus fidelis, also commonly known as the faithful sea slug, is a species of colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.
Text from the Wikipedia article “Goniobranchus fidelis”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 87 records
- February: 98 records
- March: 161 records
- April: 186 records
- May: 143 records
- June: 121 records
- July: 133 records
- August: 149 records
- September: 119 records
- October: 139 records
- November: 124 records
- December: 133 records
Depth and water temperature
Depth
Mostly recorded at 4–20 m · Deepest record: 30.8 m
Water temperature
Recorded in surface water of 19–29 °C
Photos
(c) Piotr Lukasik, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Georgina Jones, some rights reserved (CC BY-SA) · CC BY-SA · 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 
(c) Gregor Bailar, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) 呂一起(Lyu yi-chi), some rights reserved (CC BY) · CC BY · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist
Names and classification
- English
- Fiesta Rainbow Dorid, Creamy Goniobranchus, Faithful Sea Slug, Reliable Chromodoris
Names in 3 more languages
- French
- Doris fidèle
- Japanese
- フジナミウミウシ
- Simplified Chinese
- 信實多彩海蛞蝓, 信實多彩海麒麟
Other scientific names: Chromodoris fidelis, Chromodoris flammulata, Chromodoris krishna, Chromodoris lactea, Doris fidelis, Glossodoris fidelis
Similar species
Coi's GoniobranchusGoniobranchus coi
Geometric Rainbow DoridGoniobranchus geometricus
Bus Stop NudibranchGoniobranchus hintuanensis
Pink-eared Rainbow DoridGoniobranchus verrieri
- Collingwood's Goniobranchus
Goniobranchus collingwoodi
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).
- 526 open-data records from 1974 to 2026.
- Species data updated October 26, 2026.
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