odd fish vs queer duck

odd fish and queer duck both are nouns.

Word	Noun	Adjective	Verb	Adverb
odd fish	Yes	No	No	No
queer duck	Yes	No	No	No

As nouns, odd fish and queer duck are synonyms defined as:

odd fish and queer duck: someone regarded as eccentric or crazy and standing out from a group

Other synonyms of odd fish include kook, odd fellow, odd man out, queer bird.

odd fish (noun)	queer duck (noun)
someone regarded as eccentric or crazy and standing out from a group	someone regarded as eccentric or crazy and standing out from a group