goujon vs siluriform fish

goujon and siluriform fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
goujon	Yes	No	No	No
siluriform fish	Yes	No	No	No

As nouns, siluriform fish is a hypernym of goujon; that is, siluriform fish is a word with a broader meaning than goujon:

goujon: large catfish of central United States having a flattened head and projecting jaw
siluriform fish: any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth

Other hypernyms of goujon include catfish.

goujon (noun)	siluriform fish (noun)
large catfish of central United States having a flattened head and projecting jaw	any of numerous mostly freshwater bottom-living fishes of Eurasia and North America with barbels like whiskers around the mouth