On the Large Specimens of the Non-Migratory Char Obtained from Deya River in Yamagata Prefecture

Abstract

The author observed two large specimens of the non-migratory char, Salvelinus leucomaenis (Pallas).exhibited in Oisawa Natural Museum, Nishikawa-cho, Yamagata Prefecture.These fishes are mature males measuring 55 and 58 cm in total length and were captured in Deya River.an upper reach of Aka River which flows into the Japan Sea, in October, 1959 and 1966.These specimens seem to be the largest of the fluvial char, which have been, so far, considered to reach a length of 40cm at the largest.