Article · Wikipedia archive · Last revised Aug 10, 2026

Diptychus

Diptychus is a genus of freshwater ray-finned fish belonging to the family Cyprinidae, the family which includes the carps, barbs and related fishes. This genus is classified within the subfamily Schizopygopsinae, the mountain barbels. The two species in this genus are found in Himalaya and the Tibetan Plateau of China, India, Nepal and Pakistan, ranging west to the Tien Shan Mountains and Central Asia. The type species is the scaly osman, Diptychus maculatus. The name is derived from the Greek word di, meaning "two", and the Greek word ptyx, meaning "fold". Diptychus is up to 70 cm (2.3 ft) in total length.

Last revised
Aug 10, 2026
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Diptychus
Diptychus maculatus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Teleostei
Order: Cypriniformes
Family: Cyprinidae
Subfamily: Schizopygopsinae
Genus: Diptychus
Steindachner, 18661
Type species
Diptychus maculatus
Steindachner, 18661
Species

See list

Diptychus is a genus of freshwater ray-finned fish belonging to the family Cyprinidae, the family which includes the carps, barbs and related fishes. This genus is classified within the subfamily Schizopygopsinae,2 the mountain barbels.3 The two species in this genus are found in Himalaya and the Tibetan Plateau of China, India, Nepal and Pakistan, ranging west to the Tien Shan Mountains and Central Asia.45 The type species is the scaly osman, Diptychus maculatus. The name is derived from the Greek word di, meaning "two", and the Greek word ptyx, meaning "fold". Diptychus is up to 70 cm (2.3 ft) in total length.4

Species

There are two recognized species in this genus:2

References

References

  1. Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Schizothoracinae". Catalog of Fishes. California Academy of Sciences. Retrieved 2 January 2024.
  2. Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Diptychus". Catalog of Fishes. California Academy of Sciences. Retrieved 11 February 2026.
  3. "Eschmeyer's Catalog of Fishes Classification". Eschmeyer's Catalog of Fishes. California Academy of Sciences. Retrieved 2 January 2024.
  4. Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Diptychus". FishBase. May 2018 version.
  5. Li, G.; Y. Tang; R. Zhang; and K. Zhao (2016). "Phylogeography of Diptychus maculatus (Cyprinidae) endemic to the northern margin of the QTP and Tien Shan region". BMC Evolutionary Biology. 16 (1). doi:10.1186/s12862-016-0756-3. PMC 5017051.