Pterocryptis crenula is a species of catfish found in north-eastern Vietnam.Ng, H.H. and J. Freyhof, 2001. A review of the catfish genus Pterocryptis (Siluridae) in Vietnam, with the description of two new species. J. Fish Biol. 59(3):624-644.
This species reaches a length of .
Etymology The fish's name comes from the Latin for a small notch, referring to the relatively shallow notch between the confluent anal and caudal fins.
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