1Any of three closely related North Atlantic species, the redfish Sebastes marinus, the deepwater redfish S. mentella, and the Labrador redfish S. fasciatus.
2(In full "Pacific ocean perch") the North Pacific species S. alutus.
Origin
1930s; earliest use found in The New York Times.
Definition of ocean perch in US English:
ocean perch
noun
US
1Any of three closely related North Atlantic species, the redfish Sebastes marinus, the deepwater redfish S. mentella, and the Labrador redfish S. fasciatus.
2(In full "Pacific ocean perch") the North Pacific species S. alutus.