Istiblennius flaviumbrinus
Istiblennius flaviumbrinus
- Least concern
- Card rarity: Common
- Fish

Istiblennius flaviumbrinus is a species of combtooth blenny found in the western Indian Ocean, specifically the Red Sea. Males of this species can reach a maximum of 9 cm (3.5 in) SL, while females can reach a maximum of 7.2 cm (2.8 in) SL.
Classification
- Class
- Actinopterygii
- Order
- Blenniiformes
- Family
- Blenniidae
- Genus
- Istiblennius