Common Triplefin
Forsterygion lapillum
- Least concern
- Card rarity: Common
- Fish

The common triplefin is a small blennioid fish of the family Tripterygiidae. It is one of 26 endemic species of triplefin found in New Zealand across 14 genera. This species is very common in the temperate coastal and intertidal waters of New Zealand where it often lives in cobble habitats, but has been found as deep as 30 m. It has a maximum body length of around 70 mm and lives for up to three years.
Classification
- Class
- Actinopterygii
- Order
- Blenniiformes
- Family
- Tripterygiidae
- Genus
- Forsterygion