Paedocypris progenetica

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Paedocypris progenetica
Paedocypris progenetica 001.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae
Genus: Paedocypris
Species: P. progenetica
Binomial name
Paedocypris progenetica
Kottelat, Britz, H. H. Tan & K. E. Witte, 2006[1]

Paedocypris progenetica is a species of cyprinid fish endemic to Sumatra (Indonesia) where it is found in peat swamps and blackwater streams. It is the smallest known fish in the world with females reaching a maximum size of 10.3 mm, males 9.8 mm and the smallest known mature specimen, a female, measured only 7.9 mm.[2] It held the record for the smallest known vertebrate until the frog Paedophryne amauensis was formally described in January 2012.[3] However, the methods used to measure fish (from snout tip to end of tail) and frogs (from snout tip to anus) are so different that a comparison makes little biological sense.


  1. ^ Kottelat, Maurice; Britz, Ralf; Heok Hui, Tan; Witte, Kai-Erik (2005). "Paedocypris, a new genus of Southeast Asian cyprinid fish with a remarkable sexual dimorphism, comprises the world’s smallest vertebrate" (PDF). Proceedings of the Royal Society B (The Royal Society) 273: 895–899. doi:10.1098/rspb.2005.3419. Retrieved 26 October 2012. 
  2. ^ Busson, Frédéric; Froese, Rainer (15 November 2011). "Paedocypris progenetica". FishBase. Retrieved 13 January 2012. 
  3. ^ "World's tiniest frogs found in Papua New Guinea". The Australian. 12 January 2012. Retrieved 11 January 2012.