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
Lower Salmon Falls Dam Lower Salmon Falls Dam Lower Salmon Falls Dam is a concrete gravity-type hydroelectric dam on the Lower Salmon Falls of the Snake River, in the U.S. state of Idaho. The dam is located 5 miles downstream from Upper Salmon Falls, between Gooding County and Twin Falls County, Idaho. The Lower Salmon Falls Dam was originally built in 1910 by the Greater Shoshone and Twin Falls Water Power Company. Idaho Power Company acquired the plant in 1916 and rebuilt it in 1949. It's located at river mile 573.0. Nearby cities are Twin Falls, Mountain Home, and Hailey, Idaho. The newer dam