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Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Oegopsida
Family: Cycloteuthidae
Genus: Cycloteuthis
Joubin, 1919[1]
Type species
Cycloteuthis sirventi
Joubin, 1919

Cycloteuthis is a genus of squid in the family Cycloteuthidae. It is distinguished from the genus Discoteuthis by the presence of a tail on the mantle. The species C. akimushkini is currently considered a junior synonym of C. sirventi, however this is inconclusive and the World Register of Marine Species has C. akimushkini as a valid species.[1]

The genus contains bioluminescent species.[2]


  1. ^ a b Julian Finn (2016). "Cycloteuthis Joubin, 1919". World Register of Marine Species. Flanders Marine Institute.
  2. ^ Herring, Peter J. (1987). "Systematic distribution of bioluminescence in living organisms". Journal of Bioluminescence and Chemiluminescence. 1 (3): 147–163. doi:10.1002/bio.1170010303. PMID 3503524.

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