The Waters here support one of the last wild inland populations of cutthroat trout. The Snake River cutthroat, a unique race of the cutthroat species, is the only native trout in the park and parkway. Other gamefish include lake (Mackinaw) and brown trout and Rocky Mountain whitefish. Catch and release fishing is encouraged as the best way tp preserve the high quality of angling for native wild fish.

Fishing is regulated in keeping with the park and parkway's overall management objective of maintaining natural systems and scenic values. Most park and parkway waters are open in season with regulations intended to maintain quality waters, protect natural fish populations and protect the food sources of bald eagles, ospreys, otters, great blue herons and other native fish-eating wildlife.

Licenses:
A Wyoming State fishing license is required and a $5.00 Wyoming Conservation Stamp is required to accompany all licenses except the 1-day licenses.

Resident:
Season: $15.00
1-day: $3.00
Season Youth (Between 14th and 18th birthdays): $3.00
Under: Full limit but license not required

Non-resident:
Season: $65.00
1-day: $6.00
Season Youth (Between 14th and 18th birthdays): $15.00
Non-residents under 14 years of age and accompanied by a person possessing a valid Wyoming license may fish free: Fish caught by persons under 14 are included in the accompanying adult's creel limit.

Legal Fishing Tackle
Two rods or poles may be used. Each line may have no more than three single or treble hooks, flies or lures attached. The angler must be in attendance. Any fish that anglers choose not to keep must be carefully and immediately returned to the waters from which they were taken.

Prohibited Actions

• Using or possessing fish eggs (real or artificial) or corn for bait
  
  
• Chumming or placing food or other substances in any waters to feed or attract fish.
  
  
• Digging for or collecting any bait
  
  
• Snagging and speargun fishing.
  
  
• Fishing from any bridge used by vehicles, Jackson Lake Dam, boat docks or within the limits of designated mooring areas and swimming beaches

Creel and Size Limits
It is illegal to possess fish that violate the creel limit or size limit for that water.

Snake River from 150 feet below the Jackson Lake Dam downstream 1000 feet to the gauging station and the Snake River from the south boundary of Yellowstone National Park downstream to Jackson Lake
• Limit is 3 trout per day or in possession.
• Only one trout may exceed 20 inches.

Snake River from the gauging station 1,000 feet below the Jackson Lake Dam to Wilson Bridge (WY Highway 22 bridge):
• Limit is 3 trout per day or in possession.
• All trout 12 to 18 inches must be returned
• Only one trout may exceed 18 inches.
• Only artificial flies or lures may be used.

Buffalo Fork and Pacific Creek
• Limit is 3 trout per day or in possession.
• Only one trout may exceed 12 inches.
• Only artificial flies or lures may be used on Pacific Creek.

Jackson, Jenny, and Leigh Lakes
• Limit is 6 trout per day or in possession.
• Only 1 trout may exceed 24 inches.

All other open waters including the Gros Ventre River, Ditch Creek, and Spread Creek:
• Limit is 6 trout per day or in possession.
• Only 1 trout may exceed 20 inches.

Whitefish
The creel limit is 50 per day or in possession; open season April 1 – February 28 on the Snake River (i.e., closed March 1-31). To protect wildlife, the Snake River bottom from Menor's Ferry at Moose north to the Buffalo Fork confluence at Moran is closed to human access from December 15 to April 1.

Flies, Lures and Bait
Using or possessing fish eggs (real or artificial) or corn is prohibited in all park and parkway waters. The use or possession of any fish or fish parts for bait is prohibited in all park and parkway waters except on Jackson Lake.

Snake River from the gauging station 1,000 feet below the Jackson Lake Dam to Wilson Bridge (WY Highway 22 bridge): only artificial flies and lures may be used.

Pacific Creek downstream of wilderness boundary: only artificial flies and lures may be used.

On Jackson Lake and along the shores of Jackson Lake The following dead, non-game fish may be used or possessed as bait: redside shiner, speckled dace, longnose dace, Piute sculpin, mottled sculpin, Utah chub, Utah sucker, bluehead sucker and mountain sucker.

Worms, grasshoppers, crickets, other insects and artificial lures may be used in all other park and parkway waters.

Closed Areas
The following waters are closed to fishing: The Snake River for a distance of 150 feet below the downstream face of Jackson Lake Dam, Swan Lake, Sawmill Ponds, Moose Ponds, Hedrick’s Pond, Christian Ponds and Cottonwood Creek from the outlet of Jenny Lake downstream to the second bridge (south of the Jenny Lake parking area, near the climbing guide office).