Regional Fish Species Information

Printable Guides & External Links

Report Tagged Fish Here
Idaho Fish Species Database Here
Idaho Fish Species Identification Guide Here

It is important to be able to identify the fish. Sport fishing regulations are different for each species and it is your responsibility to have knowledge to be able to identify each species to know which regulations apply.

Becoming familiar with the appearance of some of the game fish will help you learn to identify them. This is important because in some cases, sport fishing regulations are different for each species and it is your responsibility to accurately identify each species to know which regulations apply. Having
knowledgeable guide ensures that you will be able to enjoy a
worry-free experience.
Click here to learn about our professional guide service.

Species	Identification	Information
Rainbow Trout (Oncorhynchus mykiss)		Idaho's #1 game fish.  Found in lakes, rivers, & streams.
Yellowstone & Snake River Cutthroat Trout (Onchorhynchus clarki)		The Yellowstone Cutthroat Trout is the only native Trout species in the region.
Brown Trout (Salmo trutta)		2nd most prevalent fish in the Henry's Fork region.  Revered as the most selective of trout, Nocturnal and piscivorous.
Brook Trout (Salvelinus fontinalis)		Great summer dry fly action on area creeks! Henry's Lake grows them big!
Mountain Whitefish (Prosopium williamsoni)		Reliable fast action on most regional rivers & streams.  Primarily caught nymphing.
Arctic Grayling (Thymallus thymallus)		Scrappy surface feeding salmonid found in a few regional fisheries.  A very rare species to the region. \

Idaho State Record Trout

Species	Weight	Length	Girth	Location	Date
Brook	8 lb. 3oz	25.5"	16.5”	Henry’s Lake	1988
Brown	27lb.5oz	37”	24”	Ashton Reservoir	2007
Cutthroat	18lb.15oz	N/A	N/A	Bear Lake	1970
Golden	5 lb. 2oz	N/A	N/A	White Sands Lake	1958
Whitefish	5 lb. 14.4oz	22.5”	14”	Island Park Reservoir	1997
Rainbow	19lb	N/A	N/A	Hayden Lake	1947
Hybrid	24lb	35.5”	24.5”	Pend Oreille Lake	1991