i love those guys. when i had my fish only system my cleaner used to climb inside my snowflakes mouth. funny and scary to watch. the eel never hurt him though.
Theyre cool creatures. I had one for about a day, but realized wen it died that there were still traces of copper in my system... still, at the pet shop, i love sticking my hands in for them to pick at em. They can really get a grip on ya, lol.