Clithon retropictum

Clithon retropictum (Korean: 기수갈고둥, Japanese: 石蜑螺) is a species of freshwater and brackish water snail with an operculum. It is an aquatic gastropod in the family Neritidae.

Clithon retropictum
A live Clithon retropictum
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Neritimorpha
Order:	Cycloneritida
Family:	Neritidae
Genus:	Clithon
Species:	C. retropictum
Binomial name
Clithon retropictum (von Martens, 1879)
Synonyms[1]
List Clithon retropicta (von Martens, 1878) Clithon retropictus (incorrect gender ending) Neritina nubila (von Martens, 1860) Neritina obtusa (Reeve, 1855) Neritina retropicta (von Martens, 1879)

Distribution

This species occurs on the Japanese islands of Honshu, Kyushu, and Shikoku.^[2] It also occurs on the South Korean island of Jeju, and in ^[3] Taiwan.

Description

Clithon retropictum shells

Habitat

C. retropictus lives in brackish water and in freshwater.^[4]

Feeding habits

Clithon retropictum is an herbivorous species.^[5]

Life cycle

C. retropictum is oviparous.^[4] Juveniles hatch from eggs in September.^[4] The lifespan of C. retropictum is up to 12 years and it is one of the most long-lived freshwater gastropods.^[6]

Parasites

• Vibrio parahaemolyticus^[7]

Status

The species is considered as a second grade endangered species by the Korean ministry of environment.^[8]