Pethia reval
Introduction '''''Pethia reval''''', the '''red-finned barb''', is a species of cyprinid fish endemic to Sri Lanka. This species can reach a length of  SL.Congener, ''Pethia cumingii'', also a Sri Lankan endemic, has long been presumed to be dichromatic with some populations exhibiting yellow fins and others displaying red fins. In 2008, the red-finned populations were elevated to the status of species and given the name, ''Pethia reval'', while the yellow-finned form remains ''P. cumingii''. It is ''P. reval'', the red-finned species, that has been kept most frequently by aquarists since the 1930s though identified as ''P. cumingii'' throughout the aquarium literature and aquarium trade until recently.
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