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食。

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，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，由于沙斯塔湖的冷水在迅速干燥，死亡幼鱼的数量可能还会更高。

This allows baby fish to grow and reproduce before they're caught.

这可以让幼鱼在被捕获之前生长和繁殖。

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

幼鱼仍然在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.

一条锦鲤一次可以产下几十万条幼鱼。

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

幼鱼不仅有被成年同类相食的风险— —兄弟姐妹也会互相吃掉。

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

夏季到来时，幼鱼将助固和扩建水坝、采集食并照看弟弟妹妹。

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。

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，每年可生产 800 万条小鲑鱼（大西洋鲑鱼幼鱼）。

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

但海草也是其它赖以生存的植，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.

海草对其他种也很重要，有的鱼用海草床来做运和游戏，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.

这些工厂正在倾倒皮工中使用的化学品，导致大量幼鱼死亡。

At La Brea, for example, up to 75% of bones can come from juveniles, while at Tanque Loma, it's less than 50%.

例如，在 La Brea， 高达 75% 的骨头可能来自幼鱼，而在 Tanque Loma， 这一比例不到 50%。

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，在它的胃里你可以看到这些小小的圆形骨头，它们是脊，幼鱼龙的骨。

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可以孵化。

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.

假设幼鱼立即长到最大尺寸并且池塘开始满负荷，并忽略您捕获的鱼的性别等因素。

And in 2010, a study that compared Dimetrodon specimens at different ages found that its sail grew really quickly, with juveniles sprouting sails that were disproportionately large for their body size.

2010 年， 一项比较不同年龄的异齿龙本的研究发现， 它的帆长得非常快，幼鱼长出的帆与它们的体型不成比例。