Obscure triplefin
Gilloblennius abditus
- Least concern
- Card rarity: Common
- Fish

The obscure triplefin is a species of triplefin blenny in the family Tripterygiidae. It was described by Graham Stuart Hardy in 1896. It is endemic to New Zealand where it has a disjunct distribution around North and South Islands where there are highly exposed rocky coasts.
Classification
- Class
- Actinopterygii
- Order
- Blenniiformes
- Family
- Tripterygiidae
- Genus
- Gilloblennius