January 24, 2017

How do you tell the gender of a rainbow or brown trout

Obvious mature male brown by the kype and the curvature of the anal fin.

Only mature rainbows and browns can be sexed by the fin method.


Obvious mature female rainbow by the lack of a kype and shorter distance between corner of the eye and end of upper jaw and the opposite curvature of the anal fin.
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Looking at the jaw makes this one a toss up but when you look at the anal fin she is a female.


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