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.

The Clark's Fork of the Yellowstone River in Wyoming

Stream photos

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Glossosoma (Little Brown Short-horned Sedge) Caddisfly Larva Glossosoma (Little Brown Short-horned Sedge) Caddisfly Larva

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington

I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.

11 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.

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Cottidae (Sculpin) Fish Adult Pictures

This seems to be a mottled sculpin, Cottus bairdi. Normally this species is more mottled.

Cottidae (Sculpin) Fish Adult from Mongaup Creek in New York

Lateral view of a Cottidae (Sculpin) Fish Adult from Mongaup Creek in New York

This fish was collected from Mongaup Creek in New York on May 6th, 2007 and added to Troutnut.com by Troutnut on May 18th, 2007.

Discussions of this Adult

Mottled Sculpin

5 replies

Posted by Taxon on May 18, 2007

Last reply on May 19, 2007 by DMM

Jason-

I believe it to be a Mottled Sculpin (Cottus bairdii), which occurs in rubble and gravel riffles, and is less often in sand-gravel runs of headwaters, creeks and small rivers. Also found in springs and their effluents and rocky shores of lakes, they feed mainly on aquatic insect larvae, but also on crustaceans, annelids, fishes, fish eggs, and plant material.

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