So this guy arrived last Wednesday via mail order, he was in rough shape upon arrival laying on it's side no movement, but once in the tank seemed to color up nicely and become fairly active, but he has these sores on his sides and his snout/mouth looks entirely crusted over along with one cloudy eye....all other fish in the tank seem to be 100% OK.
What could be going on, how can I treat it?
What could be going on, how can I treat it?