Any herbivoire Fish Suitable For A Nano

[dakota9]

I made an in-tank refugium for my nano out of black eggcrate and some cheato when I set it up. Now the cheato looks like green Jiffy Pop coming from the back of the display, as it has grown so much it has over taken the eggcrate and growing around some of the rock work.
I have two clowns in there now, was going to get a wrasse to eat the large number of worms I see (plus I like wrasses) but was wondering if theres any herbivoires that fit in a nano.
All herbivoirs I've research are pretty big fish, and thinkin' that I'm not going to find one that fits well in a 14g.

What's your thoughts?

Thanks

 

[fish scales2]

Red sea mimic blenny or maybe a Mollie Miller blenny.