I always see 2-3 at least in store every time i go.

But lotsa other wrasse species will do the job too.

Red coris get big j&l has yellow coris wrasses and also what they list as a banana wrasse which is a type of coris wrasse that will work , my banana wrasse was my favorite fish .

Or you could do what I did... Wait util their population is measured in the millions, until there's so many it looks like you've got a novel species of red coralline algae covering every square inch of your rock, don't siphon them at all, THEN treat with flatworm exit.

They form a mucous that holds mats of them together as they die, so as they start to lift off the rocks they come off in great sheets that look like underwater fire. For 30 minutes it will look like the sacking of Rome in there. Coolest thing ever.

Ay LPS that ate the dying worms were toast. About a third of my corals were seriously damaged or bit it completely.

On Second thought. Don't do what I did.

Blue Velvet Nudibranch's also eat flatworms.

Six Line wrasse.

awesome guys, excellent response, really appreciate it