My puffer had been acting kinda weird one day, spending a lot of time hiding, floating on the bottom and being very lethargic. I went to bed kinda worried about him not sure what to expect. I woke up the next morning to him stuck to one of my HOB filter screens. Every fish I have ever had get stuck to the screens has been dead since they cant swim away. So I go to get the net to scoop him out I was very upset. And just as I put the net in the water to get him, he gets up and swims away fine. I swear the little jerk did it on purpose to give me a heart attack.