There's this pond near my house that's a kids-only fishing/duck pond. You have to be under 16 or over 65 to fish. It's about 3 acres and 2-4 feet deep everywhere. Since I can't fish it I still go down there to look at fish with my toddler son as well as to practice casting. I see lots of bass and bluegill as well as carp and a few koi down there. A few days ago I was casting down there and this Koi and a few of his golden-brown compatriots were tailing/mudding right at my feet in 2 feet of water. You can see my foot in the first photo and my fly line in the second. The water was pretty muddy, as you'll see, but you can see the one Koi in the photos. I could only see the bubble trails and mud plumes from the other carp. The amazing thing is that nothing I did spooked this Koi and his buddies. I was lining them, making splashy spey anchors over them, and it didn't affect them. I even dropped my little hookless glo-bug on his head and body but he didn't notice. Cocky little buggers when they feel safe in the muddy water. They were fun to watch. When I left I gently poked the Koi with my rod tip and he quickly moseyed 10 feet away. He wasn't too alarmed. These carp aren't fished for, although the kids are chucking lures and bait into that pond all summer long.