''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 marine carangiform ray-finned fish, the only extant representative of the genus '' Rachycentron'' and the family Rachycentridae. Its other common names include black kingfish, black ...

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

References

Ray-finned fish genera Fish genera with one living species {{Carangiformes-stub