Just purchased four new koi. I went out to feed them and only counted seven fish. The others are just decorative goldfish. Anyway, I thought he was hiding, which happens, but usually when I feed them, they all go nuts. Lo and behold, as I was walking around the pond, I found the "hidden" koi stuck between two rocks. Seems as though he got in between those rocks and couldn't get back out. Just needed to vent a little.