Kiitoksia
Kiitoksia is a genus of aquatic protist. The taxonomic position of the genus is still uncertain and it has not found a robust location in any subgroup. Two species are confidently known in the genus: "Kiitoksia ystava" and "Kiitoksia kaloista". "K. ystava" was first discovered in Tvärminne in the Gulf of Finland. "K. kaloista" was discovered in Sombre Lake on Signy Island, near Antarctica. A third species, "K. parva" was transferred from the genus Clautriavia by Smith and Scoble The "Kiitoksia" species are single-celled organisms approximately 2-4 micrometres in size and round in shape. The species can  be distinguished by their flagella: "K. ystava" has two flagella, one short and one long, while "K. kaloista" has one long flagellum. Name. "" is a Finnish word for "thanks". The phrase "" means "thank you, friend", while "" means "thanks for the fish". The latter name is a reference to the Douglas Adams novel: "So Long, and Thanks for All the Fish".