I am an avid Koi lover and fish lover in general. Tonight I went out to a pond I havnt been to before thats kept in front of an apt building and noticed the Koi were not right.... The best description is prob 1/3 of the Koi in there have shed most if not ALL of their scales and their fins looks like melted plastic(not nice and firm and defining). A couple of them are sitting on the bottom against a wall, and one is kinda swimming at a tilt. The 4ft's Koi are swimming fine but their scales are going as well and fins look the same. Any ideas?