Pleco's

I don't know what a tusken is (got a latin name or L number?). Definantly not the zebra. I've only seen them for $100 (some day). I've seen the the peckoltia and the butterfly pretty similar in price, usually around 7 bucks. They're pretty different fish though. The peckoltia may eat brown algae, which the butterfly probably won't. The biggest difference is the size. A 5" clown as compared to a 19" butterfly is quite a difference.