dory vs acanthopterygian

dory and acanthopterygian both are nouns.

Word	Noun	Adjective	Verb	Adverb
dory	Yes	No	No	No
acanthopterygian	Yes	No	No	No

As nouns, acanthopterygian is a hypernym of dory; that is, acanthopterygian is a word with a broader meaning than dory:

dory: marine fishes widely distributed in mid-waters and deep slope waters
acanthopterygian: a teleost fish with fins that are supported by sharp inflexible rays

Other hypernyms of dory include spiny-finned fish.

dory (noun)	acanthopterygian (noun)
marine fishes widely distributed in mid-waters and deep slope waters	a teleost fish with fins that are supported by sharp inflexible rays
pike-like freshwater perches
a small boat of shallow draft with cross thwarts for seats and rowlocks for oars with which it is propelled