Scorpaenopsis crenulata, the serrated deepwater scorpionfish, is a species of venomous marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. This species is found in the south-western Pacific Ocean around Wallis and Futuna Islands.Motomura, H. and R. Causse, 2011. A new deepwater scorpionfish of the genus Scorpaenopsis (Scorpaenidae) from Wallis and Futuna Islands, southwestern Pacific Ocean. Bull. Mar. Sci. 87(1):45-53.

Description This species reaches a length of .

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