''Rachycentron'' is the only known member genus of the family Rachycentridae. The genus contains a single living species, the

cobia The cobia (''Rachycentron canadum'') is a species of carangiform marine fish, the only extant representative of the genus ''Rachycentron'' and the family Rachycentridae. Other common names include black kingfish, black salmon, ling, lemonfis ...

(''Rachycentron canadum''), and the Late Miocene fossil species ''Rachycentron stremphaencus'' from Maryland.

References

Fish genera Fish genera with one living species Carangiformes {{Perciformes-stub