Melanurus are excellent hunters, but will trash smaller snails & shrimp, and can/will become bullies to other fish in the tank, especially other wrasses. Sixlines are awesome as well, but can also become aggressive. I would only introduce them if they're the smallest fish in your tank, or you have a serious issue with flatworms or zoanthid eating nudis.
I keep leopard wrasses, and I find them much more polite members in my reef. They're active hunters, though probably not quite as much as the two above. My chaoti is a stellar hunter though, as active (if not more) than the sixline and melanurus.
I keep leopard wrasses, and I find them much more polite members in my reef. They're active hunters, though probably not quite as much as the two above. My chaoti is a stellar hunter though, as active (if not more) than the sixline and melanurus.