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鱼类死亡后呈现腹部上浮、鱼类背部朝下的死亡上浮现象，俗称“翻肚皮”，后肚化是皮朝自然界中普遍存在的生物学现象。这一现象的天现背后涉及鱼类生理结构、流体力学及生物化学变化的象揭复杂相互作用。将从鱼鳔的秘鱼功能机制、密度调控系统及死亡后生理失衡三个维度，鳔密系统解析鱼类浮沉行为改变的度变根本原因。
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