- any of numerous marine fishes of the family Serranidae, such as the black sea bass.
- a common name for any of numerous marine food fishes of various families, such as the Chilean sea bass and the white sea bass.
- any of various American coastal percoid fishes of the genus Centropristes and related genera, such as C. striatus (black sea bass), having an elongated body with a long spiny dorsal fin almost divided into two: family Serranidae