One of our two fire bellies didnt eat today. They are in a 15 gallon tank with spring water, a filter, and several land spots. Since we got them, they have stubbornly refused to eat anything but mealworms (what they were accustomed to eating). We feed them once per week. One refused any food (mealworms, crickets, soldierfly larva, waxworms). Usually she rapidly eats two mealworms. They have stubbornly refused to eat other insects. Should i panic? Might she be impacted? She is active, alert, hides and swims around a lot.