Spawning rainbows today
Fish culture has changed very little from the 19th century. First squeeze the eggs out of the ripe female by firmly sliding your fingers down the belly, then squeeze the milt out of the male. Swirl it around, and you're done. Provide them a safe place to develop and you'll have some nice fish in a year. This is John Riger at the Colorado Division of Wildlife's Crystal River Hatchery.
Photo by Anders Halverson