一项行动正在展开来拯救一个鳄鱼种类使其免遭灭绝。
An operation is beginning to try to save a species of crocodile from extinction.
有些鱼种是雌雄同体的。
三分之一的鲨鱼种群遭遇濒危。
神仙鱼是易于饲养的慈鲷科鱼种。
最具攻击性的鲨鱼种类是牛鲨。
并对鱼种土池暂养中存在的一些问题进行了讨论。
Further more, discuss on the existing problems in parent fish Po...
还有很多鲨鱼在渔民捕猎其他鱼种时也会不慎落网。
And many others get caught in nets, while fishermen are hunting other fish.
相对于只管理目标鱼种，海洋生态系统的管理需要以下几点。
The management of ecosystems as opposed to managing only target species entails.
饲料粒径大小随鱼的生长而增大，并维持在鱼种口全开时的一半左右。
The coal feed rate and the size of the grinding table are variable.
现在，每当捕获新的鱼种，他们都会拿来给我看，我们会拍照和记录下名称。
Now when they catch something new they come to show me, and we photograph the fish and log the name for it.
现在，每当捕获新的鱼种，他们都会拿来给我看，我们会拍照和记录下名称。
Now when they catch something new they come to show me, and we photograph the fish and log the name for it.
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