Psilorhynchus olliei is a freshwater ray-finned fish, from Kyari Chaung, Ayeyarwady drainage in Myanmar. This species reaches a length of .Conway, K.W. & Britz, R. (2015): Psilorhynchus olliei, a new species of torrent minnow from eastern Myanmar (Ostariophysi: Psilorhynchidae). Ichthyological Exploration of Freshwaters, 25 (4): 347–356.

The fish is named in honor of friend and colleague Oliver (Ollie) Crimmen (b. 1954), the fish curator at the Natural History Museum in London, for his help and company during a number of recent field trips to Myanmar.

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