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young fish
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农学
幼鱼
释
young fish
幼鱼
为稚鱼性腺形成至性成熟以前生活阶段的鱼类个体。幼鱼鳞片已全部形成,鳍条、侧线等发育完备,体色、斑纹、身体各部比例等外形特点以及栖息习性等均和成鱼一致,但是性腺尚未发育成熟。
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primordial gravitational waves
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