Black Hamlet
Hypoplectrus nigricans
- Least concern
- Card rarity: Common
- Fish

Hypoplectrus nigricans, the black hamlet, is a species of marine ray-finned fish, a sea bass from the subfamily Serraninae which is part of the family Serranidae, which also includes the groupers and anthias. It is native to shallow parts of the central Western Atlantic Ocean and Caribbean Sea. It grows to about 15 cm (6 in) in total length. It is a simultaneous hermaphrodite, with a breeding strategy known as egg trading. One fish acts as a female and lays a batch of eggs which the other fertilises. The following night, the roles are reversed.
Classification
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Serranidae
- Genus
- Hypoplectrus