koi or goldfish Can anyone identify the dark gray / black fish? He was part of 70 plus babies we had 3 years ago, we have only had koi and goldfish in our pond. He doesn't have barbels so tells me not koi. His dorsal fin I can't really tell if it goes all the way to the tail. Goldfish will have a space between the two. The only black goldfish I see are black mor and he's not one of them. https://www.youtube.com/channel/UC-nkY8_XqTEnKy6NxCA1ZDA