My cleaner shrimp is obsessed with me. Everytime I put my hand in the tank, he swims over to me and hops on it. The only difference today was he found a small hangnail that I didn't know I had... I usually humor him and let him stay on my hand for a couple of seconds, but he found my hangnail, and all of a sudden gave it a good tug. It surprised me cause I wasn't paying any attention to him, I was watching my CB.
Guess I gotta check for small hangnails before putting my hands in anymore... it kinda hurt but was pretty funny.