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如何判断金鱼是否怀孕

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共同创作者是 Craig Morton

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当金鱼准备产卵，就表示它怀孕了。金鱼是否怀孕是有迹可寻的。首先，判断金鱼是否具备怀孕的条件。其次，判断雌鱼和雄鱼是否都有“产卵前期”行为。只有雌鱼和雄鱼同缸，雌鱼才有可能怀孕。不排除你买回来的金鱼本来就有身孕，不过这个概率很低。

部分 1

部分 1 的 2:

查看金鱼是否具备怀孕的条件

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1
查看金鱼是否是雌鱼。 要想知道金鱼的性别，最好的办法就是买金鱼的时候问问老板，或者请教兽医。通常来说，雌鱼的体态更丰腴。仔细一看，你还会发现雌鱼腹部更丰满，而雄鱼腹部更纤细。雌鱼位于腮后的胸鳍比雄鱼的更短，形状更圆。 ^{[1]
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- 此外，金鱼至少要长到一岁才会产卵。
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养在户外的金鱼只在春或初夏产卵。养在室内的金鱼一年四季都有可能产卵。要判断养在户外的金鱼是否怀孕，可以看看当前是什么时节。 ^{[2]
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水温20度时，金鱼最有可能怀孕。因此，要判断金鱼是否怀孕，可以查看当前的水温是否适宜它怀孕。 ^{[3]
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部分 2

部分 2 的 2:

查看金鱼是否有“产卵前期”行为

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1
查看雄鱼身上是否有产卵结节。 当雄鱼具备使雌鱼受孕的能力时，它的头、鳃盖和胸鳍周围会长出一些极小的白色凸点，被称为“产卵结节”。要是雄鱼有产卵疣粒，那么同缸的雌鱼怀孕的可能性就更大了。 ^{[4]
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- 产卵结节通常很难被发现。要是没发现，也不代表鱼没怀孕。
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当金鱼准备产卵时，雄鱼经常追逐雌鱼，像共舞一样，被称为“求偶追逐”。通常，求偶追逐比产卵结节更容易被观察到。 ^{[5]
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3
留意金鱼是否活跃。 金鱼怀孕时通常会变得行动迟缓。倘若鱼游得慢或貌似行动困难，有可能怀孕了。 ^{[6]
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- 倘若金鱼出现“筑巢”行为，或者总躲在遮蔽物和植物旁，有可能是怀孕了。
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金鱼准备产卵时可能会厌食。要是金鱼吃得比平常少，有可能不久就要产卵了。 ^{[7]
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5
留意金鱼的体型。 雌鱼的身体通常比雄鱼圆润一些。金鱼准备产卵时，它的腹部会圆鼓鼓地突出来，比平常大很多。 ^{[8]
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- 与产卵结节同样的道理，肚子变大这种变化在某些品种的金鱼身上会很明显，而在一些品种的金鱼身上根本看不出来。
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