In Reef Fishes of the East Indies the only scorpionfish with bright white patches and the prominent tentacles above the eye is the raggy scorpionfish (Scorpaenopsis venosa). The description indicates that "tentacle above eye often present and up to twice orbit diameter in length". That suggests the tentacles can be absent and many imaged labeled as S. venosa indeed lack the tentacles. Fishbase describes the appearance as "Adults are best recognized by the tiny light-blue ocelli scattered over the body, and dark triangle below the eye. Small juveniles have three distinctive white spots along the back". Finally, I think there is a very good match with the image below, which was also IDed as S. venosa.
Too bad you didn't get a better image because this colour form seems to be rare, or just rarely photographed.
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