poor fish vs stupe

poor fish and stupe both are nouns.

Word	Noun	Adjective	Verb	Adverb
poor fish	Yes	No	No	No
stupe	Yes	No	No	No

As nouns, poor fish and stupe are synonyms defined as:

Other synonyms of poor fish include dolt, dullard, pillock, pudden-head, pudding head, stupid, stupid person.

poor fish (noun)	stupe (noun)
a person who is not very bright	a person who is not very bright