Just bought this clown fish today. It is my very first saltwater fish and is the only fish in my 20 gallon tank. First thing I noticed after introducing him into my tank was this white spot by its gill (what are the odds?). The spot, if I am to try and describe it, is more like a fungus type thing. Meaning it is not a flat random white spot...it looks as if it is attached to the fish. I attached a picture, the spot I am talking about is hard to see since the fish wont stay still for a nice picture... but it is just below its eye and before its first white stripe. anyone know what this is / how to cure it? This is my first saltwater tank and I am rather annoyed my first fish might be sick!