''Parioglossus galzini'' is a species of

dartfish Dartfishes are a group of fish, formerly considered to be a subfamily, Ptereleotrinae, of goby-like fishes in the family Microdesmidae of the order Gobiiformes, Authorities now consider the species in the family Microdesmidae are within the Gobi ...

presently known only from the island of

Rapa Iti Rapa, also called Rapa Iti, or "Little Rapa", to distinguish it from Easter Island, whose Polynesian name is Rapa Nui, is the largest and only inhabited island of the Bass Islands in French Polynesia. An older name for the island is Oparo. The ...

French Polynesia )Territorial motto: ( en, "Great Tahiti of the Golden Haze") , anthem = , song_type = Regional anthem , song = " Ia Ora 'O Tahiti Nui" , image_map = French Polynesia on the globe (French Polynesia centered).svg , map_alt = Location of Frenc ...

. This tiny fish (up to SL) is found on substrates of mud and rubble in shallow inshore waters of less than in depth. It can be distinguished from its congeners in several ways, most notably by the complete absence of a dark lateral stripe and the presence of a membrane linking the two

dorsal fin A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through conv ...

s in both sexes.

References

''Parioglossus galzini'', a new species of ptereleotrid dartfish from Rapa Island (Teleostei: Gobioidei: Ptereleotridae) J.T. WILLIAMS & D. LECCHINI
galzini Endemic fauna of French Polynesia Fish described in 2004 {{Gobiidae-stub