One of the most important tropical habitats for young fish is mangrove swamps.

幼鱼最重要的热带栖息地之一是红树林沼泽。

Baby fish aren't just at risk of being cannibalized by adults— siblings eat each other too.

幼鱼不只会被同类里成年的鱼吃掉，兄弟姐妹也会互相捕。

The smallest fish, the stout infant fish, and the smallest recorded vertebrate, this tiny little frog.

最小的鱼，粗壮的幼鱼，还有有记录的最小的脊椎动物，这种小青蛙。

Now, state officials say that number could be higher because of a quickly drying cool water in Lake Shasta.

现在，州政府官员表示，由于湖的冷水在迅速干燥，死亡幼鱼的数量能还会更高。

Juvenile fish are still grown into adults in standard open-water pens.

幼鱼仍然在标准的开放水域围栏中成长为成鱼。

A single koi can give birth to hundreds of thousands of baby fish at a time.

一条锦鲤一次以产下几十万条幼鱼。

Inside its 7,000 square metre main building are tanks capable of producing 8m smolt—juvenile Atlantic salmon—every year.

其 7,000 平方米的主建筑内设有水箱，每年生产 800 万条小鲑鱼（大西洋鲑鱼幼鱼）。

Come summertime, the juveniles will help reinforce and expand their dam, gather food, and watch their younger siblings.

夏季到来时，幼鱼将帮助加固和扩建水坝、物并照看弟弟妹妹。

It turns out that this fish had fourteen broods of male and female baby fish… without ever mating.

原来这种鱼产下了14批雄性和雌性的幼鱼… … 而且从未交配过。

On the day the calf died, 22 other females and four juveniles closely attended and occasionally nuzzled the body.

在小牛死亡的那天，其他22只雌性和四只幼鱼密切照顾，偶尔抚摸尸体。

But sea grasses are also important for other species, you have sport and game fish, who use seagrass beds for their juvenile nurseries.

但海草也是其它动物赖以生存的植物，人们用来捕获和垂钓的鱼就用海草床来培育幼鱼。

But sea grasses are also important for other species, you have sport and game fish, who use seagrass beds for those or juvenile nurseries.

海草对其他物种也很重要，有的鱼用海草床来做运动和游戏，或者用作幼鱼的托儿所。

These factories are pouring out the chemicals that they use in animal hide processing, and it's killing a lot of young fish.

这些工厂排放出用于动物皮加工的化学物质，这对许多幼鱼造成了致命影响。

Here is its stomach and inside its stomach you can see these tiny little circular bones, which are the backbones, the vertebrae of a baby ichthyosaur.

这是它的胃，在它的胃里你以看到这些小小的圆形骨头，它们是脊椎，幼鱼龙的椎骨。

Around the world, these animals voraciously consume fish eggs and larvae, routinely undermine marine farming efforts, and outcompete adult fish by consuming the resources they need to survive.

这些动物在全球海域内对鱼卵和幼鱼狼吞虎咽，破环海洋养殖业，同时，由于生存资源被消耗，成鱼也会受到它们的影响。

Fish eggs, larvae, and juveniles are easily available, nutrient-rich meals, and with thousands of eggs in a clutch, plenty are still available to hatch after the adults have snacked.

鱼卵和幼鱼是容易获得、营养丰富的一餐，且鱼有着上千个鱼卵，成年的鱼就算吃一部分也还剩很多以孵化。

Assume baby fish grow to full size immediately, and that the pond begins at full capacity, and ignore factors like the sex of the fish you catch.

假设幼鱼能立即长成成鱼，且鱼塘初始时已满载，并忽略你所捕获鱼的性别等影响因素。

First, large individuals have the greatest number of successful offspring both because bigger fish produce more eggs and because the eggs they produce also contain a more generous food supply for the baby fishies.

首先，大鱼繁衍后代成功率是最高的，因为大鱼产卵更多，也因为它们产下的卵中，为幼鱼准备的物更充足。

Even in Norway, where about half the country's salmon farms use RAS, it is limited to the first stage of the fish's life. Juvenile fish are still grown into adults in standard open-water pens.

即使在挪威， 尽管大约一半的三文鱼养殖场使用了循环水养殖系统，但它仅限于鱼生命的最初阶段。 幼鱼仍然在标准的开放水域网箱中成长至成年。