Rockfish and Scorpaenid fish

Rockfish noun - Marine food fish found among rocks along the northern coasts of Europe and America.

Scorpaenid fish and rockfish are semantically related. In some cases you can use "Scorpaenid fish" instead a noun "Rockfish".

Scorpaenid fish noun - Any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific.

Rockfish and scorpaenid fish are semantically related. Sometimes you can replace term "Rockfish" with "Scorpaenid fish", this terms are similar.