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Scientific classification
Kingdom: Chromalveolata
Phylum: Cryptophyta
Order: Cryptomonadales
Family: Cryptomonadaceae
Genus: Cryptomonas
Ehrenberg (1832)

Cryptomonas is the name-giving genus of the cryptomonads. It is common in freshwater habitats and often forms blooms in greater depths of lakes, or during winter beneath the ice. The cells are usually brownish in color, and have a slit-like furrow at the anterior. They are not known to produce any toxins and are used to feed small zooplankton, which is the food source for small fish in fish farming.

Some sources recommend merging Campylomonas and Chilomonas into Cryptomonas.[1][2]


  1. ^ Hoef-Emden K, Melkonian M (October 2003). "Revision of the genus Cryptomonas (Cryptophyceae): a combination of molecular phylogeny and morphology provides insights into a long-hidden dimorphism". Protist 154 (3-4): 371–409. doi:10.1078/143446103322454130. PMID 14658496. 
  2. ^ Hoef-Emden K (2005) Multiple independent losses of photosynthesis and differing evolutionary rates in the genus Cryptomonas (Cryptophyceae): Combined phylogenetic analyses of DNA sequences of the nuclear and the nucleomorph ribosomal operons. Journal of Molecular Evolution 60: 183-195. Abstract

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