Poropuntius exiguus is a species of ray-finned fish in the genus Poropuntius that is endemic to Lake Erhai in China.Wang, Wang, Li, Du, Yang, Lassoie, and Hassan (2013). Six decades of changes in vascular hydrophyte and fish species in three plateau lakes in Yunnan, China. Biodivers. Conserv. 22: 3197–3221. doi: 10.1007/s10531-013-0579-0 It has not been recorded since the 1970s and it is possibly extinct.
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