Margarita blenny
Malacoctenus margaritae
- Least concern
- Card rarity: Common
- Fish

Malacoctenus margaritae, the Margarita blenny, is a species of labrisomid blenny native to the Pacific coast of Central America from Costa Rica to Panama. This species can reach a length of 6.5 centimetres (2.6 in) TL.
Classification
- Class
- Actinopterygii
- Order
- Blenniiformes
- Family
- Labrisomidae
- Genus
- Malacoctenus