Anisus is a genus of small air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the family Planorbidae, the ramshorn snails and their allies.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0