John,
I have Peppermints in my display tank right now but need to add more. There are two or three varieties that eat Aiptasia the most common is Lysmata wuderermanni, but Lysmata boggessi, and Lysmata kuekenthali are also proven Aiptasia eaters. The issue is there are a lot of very similar looking species of Lysmata. The most common issue though is that it seems pretty common for Camelback Shrimp (Rhynchocinetas durbanensis) to be sold as Peppermints.
This thread has a chart that shows a lot of the common Lysmata species.
hey guys ive been in the hobby for almost a year now. one thing I haven't been successful at keeping is anemones I love the look of bta and rock flowers but they only last about a month before they curl up and never to be seen again. I also had good success keeping euphyllia until I added peppermint shrimp to the mix to get rid of a very small aptasia issue. is there any chance the reason I cant keep these is because of the shrimp. if so what are some ways to remove them from the system.
thanks.
A word of caution, ALL shrimp are opportunistic feeders. If you are going to add Peppermints I would first move all LPS to a separate tank during treatment, especially Hammers.