Reef Margin Blenny
Entomacrodus thalassinus
- Usual depth1–8 m
- Water temperature25–30 °C
- Best monthsApril and May
- How commonRare
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 1 records
- February: 7 records
- March: 4 records
- April: 23 records
- May: 38 records
- June: 5 records
- July: 14 records
- August: 9 records
- September: 19 records
- October: 3 records
- November: 5 records
- December: 1 records
Depth and water temperature
Depth
Mostly recorded at 1–8 m · Deepest record: 35 m
Water temperature
Recorded in surface water of 25–30 °C
Names and classification
- English
- Reef Margin Blenny, Sea Blenny, Twinspot Rockskipper, Twinspots Blenny
Names in 2 more languages
- Japanese
- ゴテンカエルウオ
- Simplified Chinese
- 海間頸鬚鳚
Other scientific names: Alticus thalassinus
Similar species
Reef margin blennyEntomacrodus striatus
Barredtail BlennyEntomacrodus caudofasciatus
- Wavy-lined Blenny
Entomacrodus decussatus
- Tattoo-chin Rockskipper
Entomacrodus niuafoouensis
Mimic blennyAspidontus taeniatus
Black BlennyAtrosalarias holomelas
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).
- 224 open-data records from 1902 to 2023.
- Species data updated October 26, 2026.
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