pipefish vs teleost fish

pipefish and teleost fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
pipefish	Yes	No	No	No
teleost fish	Yes	No	No	No

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

pipefish: fish with long tubular snout and slim body covered with bony plates
teleost fish: a bony fish of the subclass Teleostei

Other hypernyms of pipefish include teleost, teleostan.

pipefish (noun)	teleost fish (noun)
fish with long tubular snout and slim body covered with bony plates	a bony fish of the subclass Teleostei