I had mine in a butterfly tank with no corals for around 12 years.
I doubt your corals will survive with this fish in the tank as he'll pick at any polyps available.
I don't remember now if that particular one was twitchy, but with all my tanks and all the fish in them, I DID have fish that would twitch, most likely due to parasites, but as long as the tanks are kept well and the fish properly nourished, their immune systems should be able to keep the parasites from getting out of hand.
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