July 2023 - 40

Rainbow trout is a common and popular species for anglers throughout Wyoming. (Photo by Patrick Clayton)
However, these two fish can mean trouble
if they share the same body of water. Walleye
eat small trout and will cause a quality trout
fishery to decline rapidly. When food becomes
scarce for walleye, they don't grow and the
result is a population of stunted fish with not
enough to eat.
There are a handful of waters around Wyoming
with trout and walleye. In all cases,
those waters were managed by the Wyoming
Game and Fish Department for trout. Walleye
were illegally introduced in some waters, and
Mother Nature aided their spread into others.
Today, Game and Fish manages these waters
for trout and walleye to coexist, and in some
cases other species of fish. Those bodies of
water provide options for anglers, yet it takes a
lot of effort, research and time to make it work.
40 | July 2023
TWO-STORY FISHERY
This term is used when cold-water fish like
trout and cool-water fish like walleye exist in
the same body of water. The primary two-story
fisheries in Wyoming are Alcova, Pathfinder
and Seminoe reservoirs along the North Platte
River in the Casper Region, Boysen Reservoir
in the Lander Region and Lake DeSmet near
Buffalo in the Sheridan Region.
Matt Hahn, Game and Fish fisheries supervisor
in the Casper Region, said a big reason
for two-story fishery management is demand
for both species. He said trout fishing provides
decent action for winter ice fishing, and in
the spring and fall for shore anglers. Anglers
with boats and the right equipment also do
well with rainbow trout, especially during the
summer when trout seek deeper, cooler water.

July 2023

Table of Contents for the Digital Edition of July 2023

July 2023 - 1
July 2023 - 2
July 2023 - 3
July 2023 - 4
July 2023 - 5
July 2023 - 6
July 2023 - 7
July 2023 - 8
July 2023 - 9
July 2023 - 10
July 2023 - 11
July 2023 - 12
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July 2023 - 14
July 2023 - 15
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July 2023 - 18
July 2023 - 19
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July 2023 - 21
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July 2023 - 40
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July 2023 - 47
July 2023 - 48
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