I have a population of snail/limpet/things I wouldn't mind sending you one or two... for identification pourposes, and photographs.
they eat algae, leave zoanthids, shrooms, fish, and xenia alone. its the type of snail without a whole shell: its one of those that has the covering over only PART of the body, can't contract into itself... part of the flesh is covering the top.
I started out with two hitchikers, today I counted 7 in the open. Pretty neat, a total of 2-3 cm. clear hair algae effectively also!!! they are white/clear with blackish/brownish dots.. thier shell (what you can see of it) is black with lighter brown dots.
they are EASY to get off of the glass, and I wanna say that they are cute. So far, replicate fairly simply, since 3 months ago I only had 2, and now have more-I'd guess at least 10, since they hide easily.