About a month and a half ago I bought a young AFT from an online distributor. He came in the mail and appeared to be in decent shape except for what looked like a small red mark on his chin. Now his face looks worse than it had before and he is losing weight. Unfortunately I live in a rural area and do not have easy access to a vet, so if any help outside of finding a vet is much appreciated. He lives in a 20 gal tank. The temperature is usually between 80 and 95 degrees on the hot side of the tank and humidity hovers around 45%. He also lives on a substrate of coconut husks and eats large gut-loaded crickets. His activity level is usually very low as well and he usually spends his days hiding. I do live in a particularly noisy area though, so I've been chalking this behavior up as shyness. I've raised ATFs in the past and never seen this before. Please help.