page_title: Oncomelania hupensis
section_title: Description
hierarchical_section_title: Oncomelania hupensis / Description
caption_attribution_description: English: Photo of an apertural views of the shell of Oncomelania hupensis hupensis. .
context_page_description: Oncomelania hupensis is a species of very small tropical freshwater snail, an aquatic gastropod mollusk in the family Pomatiopsidae.
context_section_description: Over the past a few decades, the taxonomy of Oncomelania hupensis has been a dispute due to the variation in morphological characters such as shell sculpture, operculum etc. Phenotypically, Oncomelania hupensis can be separated into ribbed- and smooth- shelled morphotypes. In China, the typical morphotype of Oncomelania hupensis is ribbed-shelled, and its distribution is restricted to Yangtze River basin. Smooth-shelled snails are also distributed in mainland China, but are considered as the same species and subspecies of Oncomelania hupensis.
  Oncomelania hupensis reported in other Far East countries are smooth-shelled, and have been considered either as subspecies of Oncomelania hupensis or independent species in this genus.
caption: Photo of apertural view of a shell of Oncomelania hupensis hupensis.
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