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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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This topic is about the Beetle Family Hydrophilidae

These are a common sight on most trout streams, especially in the calm backwaters. They aren't regarded as significant to trout, although I have found them in occasional stomach samples.

Example specimen

DMM
Posts: 34
DMM on Nov 26, 2006November 26th, 2006, 5:00 pm EST
I noticed the ending of the family is reversed--should be -ae.
David
Troutnut
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Administrator
Bellevue, WA

Posts: 2758
Troutnut on Nov 29, 2006November 29th, 2006, 5:35 am EST
Thanks, fixed. I would encourage anyone else who notices incorrect spellings to speak up, too. I typed all 5000+ taxa into the database manually so there are sure to be plenty of other spelling errors. They're very easy for me to fix when you find them.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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