Clithon retropictus (incorrect gender ending) Neritina nubila Martens, 1860 Neritina obtusa Reeve, 1855 Neritina retropicta Martens, 1879 Clithon retropictum (Korean: 기수갈고둥, Japanese: 石蜑螺) is a species of freshwater and brackish water snail with an operculum, a nerite.

It is an aquatic gastropod mollusk in the family Neritidae, the nerites.

This species occurs in Japan:[1] Honshu, Kyushu and Shikoku.

[2] Its habitat is also located in South Korea near Jeju [3] and Taiwan.

[1] The lifespan of Clithon retropictum is up to 12 years and it belongs among the most long-lived of freshwater gastropods.