Kype and/or characteristics that could be of importance in inter- and intra-sexual evaluations of individual quality. The size of the kype is believed to determine male spawning frequency. The extinct sabertooth salmon, "Oncorhynchus rastrosus", was first named for its prominent premaxillary dentition. It possesses an enormous conical tooth on each premaxilla. There is no visible kype on the dentary, implying a different strategy for forming mate dominance. 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
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