I still haven't had any issues with this guy. But he is a wild son of a gun.
Everytime I put my hands in the tank...THERE HE IS. Looking at me. I could be on the left of the tank and he is right there so I go to the right and holy hell, he's over there looking at me.
Once I just wanted to see what he would do...well he climbed my finger and up my arm to where i have some hair and it looked like he was just playing in it...but then I felt it. He was either pinching, pulling or biting. Didn't hurt as much as startle me. But he is determined to be wherever my hand is everytime I put it in the tank. He'll even sneak around the back of plants to where I don't see him until he is right on me.