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Pethia setnai

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Pethia setnai is a species of cyprinid fish native to streams of the Western Ghats, India, where it is most commonly found in flowing sections of hill streams and smaller rivers. It can reach a length of up to 5.7 centimetres (2.2 in) TL. The species is named after later Dr. Sam Bomansha Setna, who was the first Director of Fisheries of the erstwhile Bombay State. The species has been imported in recent years for the aquarium trade where it is sometimes referred to as the indigo barb or Narayan barb, the latter an unfortunate name that has caused confusion between this species and Pethia narayani.