My ex gf called my former lawnmower a doggyfish. Sometimes it'll let me pet it, sometimes it'll play with me, and yes, on one or 2 occassions, it has bitten me...or tried cleaning the algae on my hand or something. Either way, yes, very amusing. The only fish of mine that hurt was a Sargent Damsel, mean fish, it would push off the corals I place in the tank, hover over that spot and look at me with the expression of "now wut b!tch". I'm glad he passed imitating Nemo thru a filter.