Willow bug flounder (willow bug flounder) - Willow bug flounder (English spelling)

Japanese: ヤナギムシガレイ(柳虫鰈) - ヤナギムシガレイ（英語表記）flounder

A marine fish of the family Pleuronectidae in the order Pleuronectiformes. It is found throughout Japan from southern Hokkaido southward, and also in China. Its name comes from the fact that its body is highly laterally compressed and elongated, resembling a willow leaf; similarly, in Niigata, Hokuriku, and Sanin, it is called Sasagarei. Its body color is pale brown, with well-developed lateral lines on both sides. Its mouth is small, and the distance between its eyes is narrow. Its spawning season is from January to April in southern Honshu, and from June to July in the Tohoku region and northward. Its eggs are spherical, pelagic, and 1.2 to 1.3 mm in size, with a large mesh-like pattern on the surface of its egg membrane.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

カレイ目カレイ科の海産魚。北海道南部以南の日本各地に分布し，中国にも見られる。体は非常に側扁し細長く柳の葉のようであるところからこの名があり，同様に新潟，北陸，山陰ではササガレイという。体色は淡い褐色で，側線が両体側によく発達している。口が小さく，両眼の間隔は狭い。産卵期は本州南部では1～4月，東北以北では6～7月である。卵は1.2～1.3mmの球形分離浮性卵で，卵膜表面に大型の網目状の模様が見られる。

出典　株式会社平凡社世界大百科事典第２版について　情報

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