thread-fish vs threadfish

thread-fish and threadfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
thread-fish	Yes	No	No	No
threadfish	Yes	No	No	No

As nouns, thread-fish and threadfish are synonyms defined as:

thread-fish and threadfish: fish having greatly elongated front rays on dorsal and anal fins

Other synonyms of thread-fish include Alectis ciliaris.

thread-fish (noun)	threadfish (noun)
fish having greatly elongated front rays on dorsal and anal fins	fish having greatly elongated front rays on dorsal and anal fins