- any of various species of trout inhabiting salt water, such as the salmon trout, Salmo trutta.
- any of several fishes of the genus Cynoscion.
- a silvery marine variety of the brown trout that migrates to fresh water to spawn
- any of several marine sciaenid fishes of the genus Cynoscion, such as C. nebulosus (spotted sea trout) and the weakfish, of North American coastal waters
