Deepwater triplefin

{{Short description|Species of fish}}

{{Speciesbox

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Clements, K.D. |date=2014 |title=Matanui profundum |volume=2014 |page=e.T179076A1566935 |doi=10.2305/IUCN.UK.2014-3.RLTS.T179076A1566935.en |access-date=20 November 2021}}

| taxon = Matanui profundum

| authority = (Fricke & Roberts, 1994)

| synonyms = Forsterygion profundum Fricke & Roberts, 1994

}}

The deepwater triplefin (Matanui profundum) is a species of triplefin blenny in the genus Matanui.{{Fishbase|Matanui|profundum|month=April|year=2019}} It was described by Ronald Fricke and Clive D. Roberts in 1994.{{Cof record|spid=63057|title=Forsterygion profundum|access-date=27 May 2019}} This species is found around the North Island, Auckland Islands and Chatham Islands at depths between {{convert|9|and|550|m|ft}}.