surffish vs percoidean

surffish and percoidean both are nouns.

Word	Noun	Adjective	Verb	Adverb
surffish	Yes	No	No	No
percoidean	Yes	No	No	No

As nouns, percoidean is a hypernym of surffish; that is, percoidean is a word with a broader meaning than surffish:

surffish: small to medium-sized shallow-water fishes of the Pacific coast of North America
percoidean: any of numerous spiny-finned fishes of the order Perciformes

Other hypernyms of surffish include percoid, percoid fish.

surffish (noun)	percoidean (noun)
small to medium-sized shallow-water fishes of the Pacific coast of North America	any of numerous spiny-finned fishes of the order Perciformes
a fish of the Pacific coast of North America