"Seriously?" Heiji hopped on over and bent down over the water. "Hey, check it out!"

He tossed his bread crumb in the water. "See that one with the big red spot on its head? That's a Tancho. And that yellow and white one over there's a Doitsu koi. It's a crossbreed between a Japanese koi and a German black carp. You can tell by how orderly its scales are."