I recently had an odd experience with my male betta, he was extremely hesitant to come up to the front which is odd for feeding time, and when I slowly moved my hand to place the digital thermometer back on the glass he became extremely frantic/frightened and hid for a solid 2 minutes and refused food. I left him alone and 15 minutes later, (and a shirt change) he was acting calmer, more like himself and ate. The only thing that was different from any other time I fed him, was that I was wearing a bright lime green shirt. I want to mention this is a betta who readily eats after WCs and isn't afraid of my hands, so the only stress factor I can think of was the bright color of my shirt. Anyone else's bettas react to brightly colored clothing?