Harlequin Bass
Serranus tigrinus
- Least concern
- Card rarity: Common
- Fish

Serranus tigrinus, the harlequin bass, is a species of marine ray-finned fish, a sea bass from the subfamily Serraninae, which is a part of the family Serranidae, which also includes the groupers and the anthias. It can be found in the western Atlantic Ocean, and also in aquarium trades.
Classification
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Serranidae
- Genus
- Serranus