yeah its a butterfly koi. they do eat worms. like goldfish they eat pretty much anything. and especially in the wild were food is little they'll eat whatever they can find.
koi butterfly arent worth as much. bigger doesnt always mean the higher the price. its more about quality. but regardless you can get money off from it.
i would bring some koi food and throw it in front of it see if it eats. do that for several days till it knows your friendly. and within time once he see's you. he will come up to you and knows its food time. koi's are friendly fish. then use some kind of big net and net it.
but i would just leave it alone if it was me. it makes the creek better to watch with a nice koi swimming in it. and i would personally feed him whenever im at the creek.
but looks like your into the money more. good luck.
It doesn't seem like you have any sort of experience fishing for koi and carp at all. How many koi have you netted from the wild? How many koi have you netted like this even in a domesticated pond? You can't befriend a wild fish of any sort. And you can't net any big fish even with the biggest net you can find. That's a ridiculous idea. And to say butterfly koi aren't worth much? It depends on quality? What do you mean by quality? The value of a koi depends on several factors, size and color are a couple of them. So you mean you would pay the same for a 5" koi or a 18" koi? Go and do some real research before you give anyone advice.
i believe he said 30' not 30" but i could be mistaken.... nobody said thousands of dollars, pretty much any koi that size is at least worth a couple hundred