Thinks the title says enough. I just started noticing the zoas in my sump / frag tank area not opening and on further inspection found these little $&@! Eating away at them, with a syringe I sucked out about halve a dozen iridescent green and brownish buggers about 3 mm in length then dipped the hundred or so frag plugs nocking loose another 3. NOw what is their any tricks or fish , shrimp , crabs to get rid of them. Strange enough their aren't any in the dt so I'm not sure if my scooter blenny and mandarin goby scavenging keeps them from taking up residency in the dt. Any help is appreciated