:Giant clingfish

{{Short description|Species of fish}}

{{for|the giant clingfish from Southern Africa|Chorisochismus dentex}}

{{Use New Zealand English|date=July 2024}}

{{Speciesbox

| image = Haplocylix littoreus 168189699.jpg

| parent_authority = Briggs, 1955

| display_parents = 3

| taxon = Haplocylix littoreus

| authority = (J. R. Forster, 1801)

| synonyms = Cyclopterus littoreus Forster, 1801

}}

The giant clingfish (Haplocylix littoreus) is a clingfish of the family Gobiesocidae, the only species in the genus Haplocylix. It is found all down the east coast of New Zealand around the low water mark amongst seaweed, on rocky coastlines. Its length is up to {{convert|15|cm|in}}.{{FishBase|Haplocylix|littoreus|month=April|year=2019}} This species was originally described as Cyclopterus littoreus in 1801 by Johann Reinhold Forster,{{Cof record|spid=13381|title=Cyclopterus littoreus|access-date=10 June 2019}} John C. Briggs subsequently placed it in the monotypic genus Haplocylix.{{Cof record|genid=6603|title=Haplocylix|access-date=10 June 2019}} Its closest relative appears to be the Caribbean deepwater clingfish Gymnoscyphus ascitus.{{cite web | url = https://www.etyfish.org/gobiesociformes/ | title = Order GOBIESOCIFORMES (Clingfishes) | work = The ETYFish Project Fish Name Etymology Database | author1 = Christopher Scharpf | author2 = Kenneth J. Lazara | name-list-style = amp | publisher = Christopher Scharpf and Kenneth J. Lazara | date = 7 February 2019 | accessdate = 10 June 2019}}