By contrast , other salmon have been seen in the wild using their kype to firmly grasp an opponent 's tail .
One suggestion was that the kype is merely the result of a surplus of chemicals , not used for the production of sex products .
Other salmon have been seen in the wild using their kype to firmly grasp an opponent 's tail .
One suggestion was that the kype is merely the result of a surplus of chemicals , not used for the production of sex products .