Ranchu There are two swim bladder due to internal or external factors have made one or two contract there can not maintain a balance lead to the disease this view was generally accepted.

兰寿有两个鳔，由于内部或外部因素使其中的一个或两个发生收缩，无法维持平衡导致发病，这种说法被普遍接受。

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The inside reason that "swim bladder bulge" disease took place may be lack of DHA and EPA and higher AA.

导致稚鱼阶段“胀鳔病”发生的内在原因可能是DHA和EPA的缺乏以及AA偏高。

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