(not from the net!)
These shrimp are good at killing Aiptasia, however they will also eat your tubeworms if you have any, so be careful when using them. I used to have a carpet of tubeworms coming out of my crush corals on the bottom of the tank like a carpet, but my peppers ate them all.
My peppermints are little food thieves! They always steal food from my LPS corals whenever I am target-feeding the corals. If I had to do my tanks over, I would not get peppermints for that reason. Aside from that, though, I like them. They have attractive coloring and are smaller than the skunk cleaners, so are good for smaller tanks. But if one has LPS corals I would not advise peppermints.
I have had a 200 L saltwater aquarium for about 5 months now, where I have 2 perculas and 2 peppermint shrimp. I can stick my finger in the water and they will actually clean it. I love them, I'm currently raising some in a separate tank. What is amazing is I bought these two at the same time and they are a breeding pair. I love watching them sway with they current in their cave.
I have read all these glowing reports about peppermint shrimp eating aiptasia and being gentle and reef safe. What they don't say is that they also make great food for any larger fish in your tank. My spotted grouper and puffer were fighting over who would eat them first. The peppermint shrimp didn't last ten seconds in my 570 L live rock tank. Nice investment down the drain.
I have a 570 L reef tank that I have managed for about 18 months. Aiptasias became a nuisance a few months ago, and I added 4 peppermint shrimp to try to eliminate them. Although I used a syringe and calcium (aiptasia remover) to eliminate the dozen large ones, the peppermint shrimp took care of the remianing 20+ small to medium size aiptasias in a matter of days. I'm sure everybody will not experience the same success rate, but my peppermint shrimp saved the day. Now I have four little shrimp in my reef tank that add a great deal of personality to my marine environment, and I am confident they will continue to keep those nasty sea-weeds away.
I've watched several times this little sneaky shrimp mainly cleaning and grabbing what flies by them, but sometimes, as my brittly star will be walking a piece of food up his arm, the peppermint will steal the food from the star fish. Able to move incredibly quick, some people have trouble finding them but mine are very sociable. Even sometimes they swim in the current and consistently move around the tank, looking for stuff to clean up.
If you have corals, be weary of these guys. I recently added two to my tank, which greatly preferred eating my frogspawn to eating aiptasia. Personally, after watching these guys eat my frogspawn and pick at my zoas, I will never have another shrimp in a tank that has coral. Just kill the aiptasia yourself, it's much easier than trapping these little fiends.
These pages have enough comments to give the reader a basic idea on the topic. Further comments are still very welcome (through the site's contact form) as long as they provide new and/or advanced information not yet discussed in the existing ones.