Hello, new to the forums, but about 5 months ago we had started to rehabilitate a family members bearded dragon, and he has been doing very well. He has been eating, gaining weight, becoming more energetic, and slowly becoming less nervous with handling. Even took a MASSIVE 40 gram poop the first week. But yesterday I noticed these yellow spots under his belly, and I am worried if this could be yellow fungus. His previous tank conditions were too cold, no UVB, and sand substrate. Here, he is in a 75 gallon tank, reptile carpet, and a 150 watt mercury vapor bulb. We already have a vet appointment for Tuesday, but just wanted to see what y'all think. I am very worried since I have heard a lot of conflicting information on how treatable yellow fungus is, and we have another bearded dragon kept in a different tank, so worried for her health as well.
We had already wanted to get a vet to check him over for other issues we have noticed, he seems like he doesn't see very well; when we feed him, he moves his head all around the bug like he is trying to find it, even sometimes sweeping his head on the carpet to catch it, so a bit strange.