Roundfin goby
Bathygobius cyclopterus
- Usual depth0–3 m
- Water temperature20–30 °C
- Best monthsMay, June, and September
- How commonRare
Photo credit: (c) Valentin Moser, some rights reserved (CC BY) · CC BY · iNaturalist
About this species
Bathygobius is a circumtropical genus of fish in the family Gobiidae.
Text from the Wikipedia article “Bathygobius”, 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: 10 records
- February: 10 records
- March: 12 records
- April: 15 records
- May: 37 records
- June: 25 records
- July: 23 records
- August: 13 records
- September: 25 records
- October: 10 records
- November: 15 records
- December: 9 records
Depth and water temperature
Depth
Mostly recorded at 0–3 m · Deepest record: 7 m
Water temperature
Recorded in surface water of 20–30 °C
Names and classification
- English
- Roundfin goby, Cyclops Frillgoby, Roundfin Frillgoby, roundfin goby, Spotted Frillgoby
Names in 2 more languages
- Japanese
- Yahazuhaze, ヤハズハゼ
- Simplified Chinese
- 圓鰭深鰕虎, 圓鰭深鰕虎魚
Other scientific names: Bathygobius crassiceps, Bathygobius laoe, Bathygobius mearnsi, Bathygobius nox, Gobius cyclopterus, Gobius nox, Gobius variabilis, Gobius varius, Mapo crassiceps, Mapo mearnsi
Similar species
Brownlined GobyBathygobius coalitus
Cocos frillfin gobyBathygobius cocosensis
Dusky frill-gobyBathygobius fuscus
Brownlined GobyBathygobius meggitti
- Common goby
Pomatoschistus microps
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).
- 349 open-data records from 1902 to 2012.
- Species data updated October 26, 2026.
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