Like Willow says cleaners are front and center, peppermint are shy. There are a couple types of peppermint shrimp as well some people/stores will label camel shrimp as peppermints. One type of peppermint is known to eat aptasia but even if you get the right kind they may not eat the aptasia so it's a toss up. Either one will spawn in your tank if you have more than two, when they release the larvae it's a good natural food for your corals etc.
Doug
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