pearl-fish vs pearlfish

pearl-fish and pearlfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
pearl-fish	Yes	No	No	No
pearlfish	Yes	No	No	No

As nouns, pearl-fish and pearlfish are synonyms defined as:

pearl-fish and pearlfish: found living within the alimentary canals of e.g. sea cucumbers or between the shells of pearl oysters in or near shallow seagrass beds

pearl-fish (noun)	pearlfish (noun)
found living within the alimentary canals of e.g. sea cucumbers or between the shells of pearl oysters in or near shallow seagrass beds	found living within the alimentary canals of e.g. sea cucumbers or between the shells of pearl oysters in or near shallow seagrass beds