Grins, when mine are done, I would gladly send them to you. I have had them for a week and they have eaten about 70% of the 60 or so aiptasia that were visible. I'm sorry but the research and the bookmarks I had on peppermints over 3 years ago to find which ones were more apt to eat glass nems has been lost in a hard drive crash. I do remember there are 2-4 different kinds that are all referred to as peppermints.
When I had my tank in Atlanta, I went through 7 different "peppermints" until I found the one. The 2 that I have now went virtually straight to the aiptasia. Took them about 2 hours to find the first one and go to town.
OMG, I will love you forever if you send me even ONE of them. I actually DID practically tear down the tank and took over 4 hours searching the things out with JoesJuice. Thought I had them all but blasted things have been rearing again. Niko posted a few links to tell the difference but I swear all 6 of the ones I've bought look just like them and still do nothing but sway. Once the freaky skunks showed them the way of Hermaphordite Lysmata love they started appearing with egg sacs then fertilized ones as well.