Eight-fingered threadfin
Filimanus sealei
- Water temperature29–30 °C
- Best monthsNovember
- How commonRare
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 0 records
- February: 0 records
- March: 0 records
- April: 0 records
- May: 0 records
- June: 0 records
- July: 1 records
- August: 0 records
- September: 0 records
- October: 0 records
- November: 5 records
- December: 1 records
Depth and water temperature
Water temperature
Recorded in surface water of 29–30 °C
Names and classification
- English
- Eight-fingered threadfin, Eigthfinger threadfin, eight-fingered threadfin, eigthfinger threadfin, kugao
Names in 3 more languages
- Spanish
- barbudo de ocho dedos
- French
- barbure à huit doigts
- Simplified Chinese
- 八絲指馬鮁, 西氏絲指馬鮁
Other scientific names: Polydactylus opercularis, Polydactylus sealei
Similar species
- Sevenfinger threadfin
Filimanus heptadactyla
- Splendid threadfin
Filimanus perplexa
- Indian sevenfinger threadfin
Filimanus similis
- Yellowthread threadfin
Filimanus xanthonema
Blind tassel-fishEleutheronema tetradactylum

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).
- 15 open-data records from 1910 to 1949.
- Species data updated November 2, 2026.
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