pearlfish vs pearl-fish

pearlfish and pearl-fish both are nouns.

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

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

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

pearlfish (noun)	pearl-fish (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