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.

Stream photos

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Skwala (Large Springfly) Stonefly Nymph Skwala (Large Springfly) Stonefly Nymph

Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington

This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.

6 Recently Added Photos

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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Female Caenis (Angler's Curse) Mayfly Dun Pictures

Here's a goofy picture of a Caenis dun falling off the back of a leaf, never to be seen again. These mayflies are very tiny and fragile, and very hard to capture and photograph without damaging. This little dun hatched from the nymph in a tub of nymphs while I was picking through for aquatic specimens to photograph... I grabbed the leaf it hatched onto and tried to take some pictures but it got away after about half a picture.

Female Caenis (Caenidae) (Angler's Curse) Mayfly Dun from unknown in Wisconsin

This mayfly was collected from unknown in Wisconsin on August 5th, 2004 and added to Troutnut.com by Troutnut on January 19th, 2006.

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