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Alosa sphaerocephala : ウィキペディア英語版 | Alosa sphaerocephala
''Alosa sphaerocephala'', or the Agrakhan shad, is a species of clupeid (herring-like) fish, one of the endemic shad species in the Caspian Sea. It spawns in shallow waters (about 3 m) of the northeastern part of the Caspian Sea, in salinities of 8-10 ppt. It does not enter fresh water. Spawning takes place in temperatures of 18-20°C, from mid-May to end of June, and the young move southward relatively late in the autumn season. == Footnotes ==
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抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Alosa sphaerocephala」の詳細全文を読む
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