''Angulyagra polyzonata'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of a

freshwater snail Freshwater snails are gastropod mollusks that live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs t ...

with a

gill A gill () is a respiration organ, respiratory organ that many aquatic ecosystem, aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow r ...

and an operculum, an

aquatic Aquatic means relating to water; living in or near water or taking place in water; does not include groundwater, as "aquatic" implies an environment where plants and animals live. Aquatic(s) may also refer to: * Aquatic animal, either vertebrate ...

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the family

Viviparidae Summary Viviparidae, commonly called river snails or mystery snails, are a family of freshwater snails with gills and a protective lid (operculum). Recent studies show that their family tree is messier than expected, with genetic evidence sugg ...

Distribution

This species is found in southern and southeastern

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

and in northern

Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...

.Madsen H. & Hung N. M. (2015). "Reprint of “An overview of freshwater snails in Asia with main focus on Vietnam”". ''

Acta Tropica Acta or ACTA may refer to: Institutions * Anti-Counterfeiting Trade Agreement, an intellectual property trade agreement * Administrative Council for Terminal Attachments, a standards organization for terminal equipment such as registered jacks * A ...

'' 141(Part B): 372–384. . It is non-indigenous in Taiwan.

Description

The width of the shell is 11.2–21.4 mm. The height of the shell is 13.8–32.5 mm. Similar species is '' Bellamya heudei''.

Ecology

Habitat

''Angulyagra polyzonata'' lakes, rivers, creeks and drains. It is a common species in aquaculture ponds.

Parasites and predators

''Angulyagra polyzonata'' is a host of a trematode '' Multicotyle purvisi''. Predators of ''Angulyagra polyzonata'' include the

black carp The black carp (''Mylopharyngodon piceus'') or Chinese black roach is a species of freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies. The black carp is the sole extant species of the genus ' ...

''Mylopharyngodon piceus''.Hung, N. M., Stauffer, J. R., & Madsen, H. (2013). Prey species and size choice of the molluscivorous fish, black carp (Mylopharyngodon piceus). Journal of freshwater ecology, 28(4), 547-560. .

Human use

This species is eaten by people and it is used as fish, poultry and livestock raising. It is usually collected from the aquaculture pond when the pond is empty.

References

Viviparidae {{Viviparidae-stub