A fish hatchery is a place where fish are raised for commercial, recreational, or ecological purposes.
At a typical fish hatchery, one finds flat plots of lands with tanks of fish. Often the tanks are long rectanglar tubs, sunk under the suface of the ground. Walking along the rows of tanks one finds fish in different stages of development: hatchlings, fingerings, adolescent fish. The air is calm, and your family is there for a Sunday picnic.
When the fish are grown, they are taken to local lakes and rivers, to be released. The feeling at a fish hatchery is one of overwhelming solitude.