I've only ever seen them in FOWLR's. The challenge with predicting what butterflies may sample is that change their minds from time to time. I found that of the 3 butterflies I've tried is that anything with a tentacle is usually the most at risk. So right off the bat, things like aiptasia and majano, for sure, they're munched. LPS feeder tentacles that come out at night, and so on. SPS with polyp extension were toast first then others with less polyps. Started off as the polyps just being mowed like a lawn but eventually the coral would just let go.
Never tried semilarvatus specifically but my guess is they're pretty similar to other butterflies.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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