I have read the description for skin shedding on the red ear slider website and that description matches what i think I'm seeing but it is excessive. He is shedding quite a bit on his neck arms and back legs. Is this ok or is there something I need to change? He also seems a little (not a huge change) less active but I was thinking maybe he is just tired from swimming all the time?
More skin shedding is this normal? Maybe skin fungus?

