Cryptocaryon irritans is a species of ciliate protozoa that parasitizes marine fish, causing marine white spot disease or marine ich (pronounced ik). It is one of the most common causes of disease in marine aquaria.
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