The species of fish that are normally reared at Jones Hole National Fish Hatchery are:
To meet the high fish production demands, Jones Hole National Fish Hatchery has 40 rearing tanks and 50 raceways. In fiscal year 2000, Jones Hole National Fish Hatchery reared almost 2 million trout, and stocked fish in over 30 different water areas in Utah, Wyoming, and Colorado, the largest one being the Flaming Gorge Reservoir. As a result of Jones Hole National Fish Hatchery's stocking efforts, economic benefits weigh-in at 185,000 angler days valued at over $9.25 million per year.
Since this hatchery keeps no broodstock, approximately 2 million rainbow, cutthroat, brown or Kokanee eggs are received annually from other Federal or State hatcheries. After disinfection, the eggs are incubated for approximately 10 days before hatching, then placed in concrete rearing tanks inside. When the yolk sac is absorbed and the fry swim up, feeding is begun, first by hand and later with automatic feeders. The commercially prepared feed is a nutritionally balanced diet composed of fish products, cereals, vitamins and minerals, resulting in fish growth of as much as one inch per month.
After the trout reach the small fingerling stage or about 3" in length, they are transferred to concrete raceways outside. Unlike many hatcheries that move fish to the outside in portable tanks, Jones Hole National Fish Hatchery has a unique system of underground pipes that can move the fish directly from inside tanks to the outdoors. Feeding is done by hand or in some cases, by either automatic or demand feeders. During their growth period to stocking size, the fish are sample counted monthly to determine daily feed amounts and to control fish density in the raceways. Should fish disease occur, they are controlled by using approved chemicals applied either in the feed or water.
Currently, the hatchery produces a variety of trout species for the Upper Colorado River System. These trout help to replenish and encourage sustainable fish populations to promote a healthy Upper Colorado River Ecosystem and provide angling opportunities for recreational users like you!
Last updated: January 20, 2012