Thynnichthys polylepis
Thynnichthys polylepis
- Least concern
- Card rarity: Common
- Fish

Thynnichthys polylepis is a species of cyprinid of the genus Thynnichthys. It inhabits Sumatra and Borneo. It has a maximum length among unsexed males of 18.0 centimetres (7.1 in). Described in 1860 by Pieter Bleeker, it is considered harmless to humans.
Classification
- Class
- Actinopterygii
- Order
- Cypriniformes
- Family
- Cyprinidae
- Genus
- Thynnichthys