Jayfrog here, I'm having an issue with my smaller clawed frog =T His hand seems to have blackened for some reason. At first I thought that it may have been that he was changing colors but it looks very unusual. I tried searching for those symptoms but unfortunately I found nothing. The inner part of his hand and arm are black the outer looks fine. This only started happening recently and I'm going to test the water now. Will provide a picture as soon as I find my camera. Any ideas are appreciated as always.