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Crossocheilus obscurus is a little known cyprinid fish which was first described in
2009 in the Batang Hari basin (West Sumatra province, Indonesia), with no additional
published information since that time. In April 2016, C. obscurus was observed and
photographed in the Musi basin (South Sumatra province). The identification of this
species confirms its presence in a new river basin, more than 250 km south from its