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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Least Roachflies

This common name refers to only one species. Click its scientific name to learn more.

Stonefly Species Yoraperla brevis

These are very rarely called Least Roachflies.
Yoraperla brevis (Peltoperlidae) (Roachfly) Stonefly Adult from Station Creek in Montana
Yoraperla brevis (Peltoperlidae) (Roachfly) Stonefly Nymph from Station Creek in Montana

Least Roachflies

Scientific Name
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