Thought I would share this, a normal occurrence, and was wondering if anyone else has had it happen. Have had a powder blue tang for about 7 years. He or she is very active and aware of my movements in and around the aquarium, especially when its feeding time. My aquarium is a 120 rimless open top. I have my computer set up right next to the tank and am often sitting at the desk with my back toward the aquarium. On occasion when my back is turned he splashes water out of the tank at me as if he wants attention.. food.. ect. Talk about fish being an interactive pet.. well let me tell you... he is.. and I love it.. just not the glass cleaning part.