Those are false percs..they hosted for a while and then lost interest, they both hopped out of my tank in a matter of a couple days.....most of been rumors about that darn nemo movie or something.....No it is not a natural host. If you are interested in one of the atural hosts, All I can say is Only in a species specific tank. Ritteri are hard to impossible to care for, and carpets are even harder, plus they are tank roaming fish eaters(both kinds). Sounds like a decent amount of light, if you feed them silversides and krill a couple times a week, keep your PH stable, provide a nice random current, and a good rocky place to stick their foot you will be happy with a BTA, or a rose BTA. Go tank prop, the Ocean will thank you for it.