olive blenny
Istiblennius unicolor
- Usual depth1–10 m
- Water temperature23–29 °C
- Best monthsJune and November
- How commonRare
Photo credit: no rights reserved, uploaded by Dmitry Semigradsky · CC0 1.0 · iNaturalist
About this species
Istiblennius unicolor, the pallid rockskipper, is a species of combtooth blenny found on coral reefs in the western Indian Ocean. Males of this species can reach a maximum standard length of 10.2 cm (4.0 in), while females can reach a maximum length of 9.2 cm (3.6 in).
Text from the Wikipedia article “Istiblennius unicolor”, 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: 0 records
- February: 3 records
- March: 2 records
- April: 3 records
- May: 1 records
- June: 10 records
- July: 4 records
- August: 3 records
- September: 1 records
- October: 2 records
- November: 6 records
- December: 1 records
Depth and water temperature
Depth
Mostly recorded at 1–10 m · Deepest record: 10 m
Water temperature
Recorded in surface water of 23–29 °C
Photos
no rights reserved, uploaded by Dmitry Semigradsky · CC0 1.0 · iNaturalist 
no rights reserved, uploaded by Dmitry Semigradsky · CC0 1.0 · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist
Names and classification
- English
- olive blenny, Pallid Rockskipper
Other scientific names: Halmablennius unicolor, Salarias unicolor
Similar species
Streaky rockskipperIstiblennius dussumieri
Rippled rockskipperIstiblennius edentulus
Black-lined BlennyIstiblennius lineatus
peacock blennyIstiblennius meleagris
rockskipperIstiblennius zebra
ImspringerIstiblennius bellus
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).
- 56 open-data records from 1838 to 1997.
- Species data updated November 3, 2026.
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