Photo credit: (c) Martin Purdy, some rights reserved (CC BY), uploaded by Martin Purdy · CC BY · iNaturalist
About this species
Filistriatus sexfilis, the six-finger threadfin or yellowthread threadfin, is a species of marine ray-finned fish, a threadfin from the family Polynemidae which is found in the Indian and Pacific Oceans.
Text from the Wikipedia article “Filistriatus sexfilis”, licensed CC BY-SA 4.0. Read the article
Where and when
Best months
Worldwide (open data)
- January: 2 records
- February: 6 records
- March: 8 records
- April: 3 records
- May: 4 records
- June: 2 records
- July: 6 records
- August: 11 records
- September: 3 records
- October: 7 records
- November: 10 records
- December: 6 records
Photos
(c) Martin Purdy, some rights reserved (CC BY) · CC BY · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist 
(c) Benoit NABHOLZ, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist
Names and classification
Other scientific names: Polyactylus sexfilis, Polydactylus kuru, Polydactylus sexfilis, Polynemus kurru, Polynemus kuru, Polynemus sexfilis, Polynemus sexfills, Polynemus sexifilis
Similar species
Blind tassel-fishEleutheronema tetradactylum
- Sevenfinger threadfin
Filimanus heptadactyla
- Splendid threadfin
Filimanus perplexa
- Eight-fingered threadfin
Filimanus sealei
- Indian sevenfinger threadfin
Filimanus similis
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).
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Species data updated November 2, 2026.
Log what you see on your next dive
The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.