ethereal beauties but they're wiping out my zoas

[reeferious]

almost certain these are nudibranch specie. finished off a green centered zoa colony and were working on my green xenia patch.

[shrimpchips]

Something else is probably eating the xenia (it's probably not a xenia if it's green, but anyways..). Nudis tend to have very specific diets, so I suspect you may have a different wonderful little critter doing a number on your other soft corals.