Fish hatcheries are sites of artificial breeding of fish. Commercial hatcheries can be found via state departments. For example, the New York State Department of Environmental Conservation has a list of such establishments.
In 2004, the National Fish Hatcheries System included 70 fish hatcheries, seven fish technology centers, and nine fish health centers.
Check on a state by state basis, but I doubt if any such service exits today, Here's a quote from the state of Indiana: Fish for private ponds are no longer available from federal hatcheries or from Indiana state fish hatcheries. All fish raised at these facilities are used for stocking public waters that have guaranteed public access to all Hoosier fishermen. The best source of fish for private ponds is a reputable commercial fish hatchery. Several hatcheries are located in Indiana as well as in surrounding states. A list of commercial fish hatcheries is available from the Division of Fish and Wildlife.
In the early 2000s, 45 states were involved in the distribution of fish and fish eggs from hatcheries.
This category covers establishments primarily engaged in operating fish hatcheries or preserves.
NAICS 112511 applies to Finfish Farming and Fish Hatcheries.
Fish hatcheries were developed during the latter part of the nineteenth century in an effort to supplement dwindling fish stocks
By 1916 the federal government operated more than 100 hatcheries, and many states also had opened their own hatcheries
Most of the fish distributed were cold-water species with Fall Chinook Salmon accounting for nearly half of the total cold-water distribution.
According to a Washington Office Fish Hatchery Species report, roughly 170 million fish are distributed from hatcheries in the United States and more than 140 million eggs produced.
they help save them by inserting fish sperm into female fish
The ministry of fisheries,environment and agriculture is responsible for keeping up the fish hatcheries bird sanctuary's and wild refugees.