I have never been bit myself-luckily, but I dared my friend to put his finger inside my tank full of redsnakeheads one time. They were still babies about 4-5" and one of them clamped down on his finger and he freaked out and yanked his hand out of the tank with the snakehead still attatched to his finger. He yanked out with such force that he flung the snakehead all the way accross the room. I laughed my arse off and put the snakehead back in the tank and said, " Now that's how they catch em in Thailand." 
