The least rasbora or exclamation point rasbora (''Boraras urophthalmoides'') is a species of

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

in the genus ''

Boraras ''Boraras'' is a genus of freshwater ray-finned fishes belonging to the subfamily Rasborinae - the Rasbora, which along with sister subfamily Danioninae (Danio, Devario, Microdevario) comprise the family Danionidae, group popular among freshw ...

'', native to freshwater habitats in

mainland southeast Asia Mainland Southeast Asia (historically known as Indochina and the Indochinese Peninsula) is the continental portion of Southeast Asia. It lies east of the Indian subcontinent and south of Mainland China and is bordered by the Indian Ocean to th ...

. This species is very small, ranging from .

References

*Kottelat, M., 1991 - Ichthyological Exploration of Freshwaters 2(2): 177–191. Notes on the taxonomy of some Sundaic and Indochinese species of ''Rasbora'', with description of four new species (Pisces: Cyprinidae). *Conway, K. W., 2005 - Ichthyological Exploration of Freshwaters 16(3): 249–264. Monophyly of the genus ''Boraras'' (Teleostei: Cyprinidae) *Conway, K. W. and M. Kottelat, 2011 - Zootaxa 3002: 45–51. ''Boraras naevus'', a new species of miniature and sexually dichromatic freshwater fish from peninsular Thailand (Ostariophysi: Cyprinidae). *Kottelat, M., 2013 - The Raffles Bulletin of Zoology Supplement 27: 1–663. The fishes of the inland waters of southeast Asia: a catalogue and core bibliography of the fishes known to occur in freshwaters, mangroves and estuaries. *Liao, T. Y., Kullander, S. O. and F. Fang, 2009 - Zoologica Scripta 39(2): 155–176. Phylogenetic analysis of the genus ''Rasbora'' (Teleostei: Cyprinidae). *Mayden, R. L., K. L. Tang, K. W. Conway, J. Freyhof, S. Chamberlain, M. Haskins, L. Schneider, M. Sudkamp, R. M. Wood, M. Agnew, A. Bufalino, Z. Sulaiman, M. Miya, K. Saitoh, and S. He, 2007 - Journal of Experimental Zoology, Molecular Development and Evolution 308B: 1–13. Phylogenetic relationships of ''Danio'' within the order Cypriniformes: a framework for comparative and evolutionary studies of a model species. *Tang, K. L., M. K. Agnew, W. J. Chen., M. V. Hirt, T. Sado, L. M. Schneider, J. Freyhof, Z. Sulaiman, E. Swartz, C. Vidthayanon, M. Miya, K. Saitoh, A. M. Simons, R. M. Wood and R. L. Mayden, 2010 - Molecular Phylogenetics and Evolution 57(1): 189–214. Systematics of the subfamily Danioninae (Teleostei: Cypriniformes: Cyprinidae). {{Taxonbar, from=Q2760911 Boraras Fish described in 1991 Taxa named by Maurice Kottelat

References

Further reading