Sorry for your loss. Based on the first picture, those white spots are too big to be ich. They look more like lesions possibly caused by something else in your tank, perhaps anemone stings. I would monitor the other fish in the meantime and check whether they develop similar white patches on their body. If they’re doing fine, I would leave the tank alone. Also, how big is your tank? If you have a smaller tank with anemones in it, could be that the rabbitfish was stung by an anemone while trying to swim around in a small space. They are active swimmers after all. Just a thought. Sent from Singapore Reef Club mobile app