在相同池塘养殖条件下，迸行了雌核发育鲢各系(当年鱼)及与普通鲢的生长对比试验。
The paper deals with growth comparison between different strains of gynogenetic silver carp and common silver carp at age 1 under the same culture condition in ponds.
此外，调查期间内的2003年，台湾中部以北之海域出现臭肚鱼大发生之现象，但并未造成当年鱼类群聚结构的明显改变。
Besides, the massive occurrence of rabbitfish , Siganus fuscescens in the waters north of Central Taiwan in 2003 did not affect the assemblage structure too much.
这些幼龄鱼作为其他鱼类捕猎的对象，当年龄更大、以捕食为生的鱼类数目增加，幼龄黑线鳕便要遭遇巨大的磨难。
Such small fry are prey, and as the number of older, predatory fish increased, yearling haddock suffered disproportionately.
孵化所得的鱼苗育成夏花鱼种，当年即可养成商品鱼。
The fish summerlings obtained from fry intensive rearing could grow into the marketable sizes in the same year.
孵化所得的鱼苗育成夏花鱼种，当年即可养成商品鱼。
The fish summerlings obtained from fry intensive rearing could grow into the marketable sizes in the same year.
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