Kype Kype A kype is a hook-like secondary sex characteristic which develops at the distal tip of the lower jaw in some male salmonids prior to the spawning season. The structure usually develops in the weeks prior to, and during, migration to the spawning grounds. In addition to the development of the kype, a large depression forms in the two halves of the premaxilla in the upper jaw, allowing the kype to fit into the premaxilla when the mouth is closed. The kype functions as a secondary sexual characteristic and influences the formation of dominance hierarchies at the spawning grounds. The
Third Battle of the Hook ""feu de joie""), followed by a salute from Centurion tanks which fired HE shells onto a single target. The Hook was defended on a fourth occasion immediately prior to the armistice by an Australian infantry battalion, a New Zealand artillery regiment and two American infantry regiments, supported by British tanks, during the Battle of the Samichon River. Third Battle of the Hook The Third Battle of the Hook () was a battle of the Korean War that took place between a United Nations force, consisting mostly of British troops, supported on their flanks by American and Turkish units against a