A lot of the time, my betta Caravaggio is very active. He appears excited and full of energy and likes hanging out in his favorite hiding spot. I've had him for about a week. He's had a thermometer in his tank for about three days. In th last day, I've noticed that when he isn't being active, he's pressed his nose against the base of the thermometer where it meets the suction cup, (he really likes the small band where the suction cup goes around the top of it) and BARELY moves. He's totally unresponsive when he's in "thermometer mode" and won't stop for food.
Is this normal?