Just about every fish I've ever seen goes after pods with a vengeance. My blue neon goby picked my tank clean in a couple of weeks...now I only have mostly amphipods left since it doesn't hit the sandbed for a snack.
But yes, if you really want 'em gone a sixline wrasse or mandarin will clear that up for you.
Are they bugging you or something? As folks have stated, most people are in the opposite position. They want more pods. Pods are good. They scavenge and eat algae. If you have a bunch, and your corals are happy, I'd leave them right where they are.
or maybe even micro bubbles or dirt being stirred up? Though I had mysis after a little less than year so I'm not sure why 8 months is hard to believe?