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

幼鱼最重要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.

最鱼，粗壮幼鱼，还有有记录最椎动物，这种青蛙。

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，由于沙斯塔湖冷水在迅速干燥，死亡幼鱼数量可能还会更高。

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繁殖。

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

幼鱼仍然在准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，幼鱼将帮助加建水坝、采集食物并照看弟弟妹妹。

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

在牛死亡那天，其他22只雌性四只幼鱼密切照顾，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 平方米主建筑内设有水箱，每年可生产 800 万条鲑鱼（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.

但海草也是其它动物赖以生存植物，人们用来捕获垂钓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，有鱼用海草床来做运动游戏，或者用作幼鱼托儿所。

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

这些工厂正在倾倒动物皮加工中使用化学品，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% 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.

这是它胃，在它胃里你可以看到这些圆形骨头，它们是椎，幼鱼龙椎骨。

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.

鱼卵幼鱼是容易获得、营养丰富一餐，且鱼有着上千个鱼卵，成年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，并忽略您捕获鱼性别等因素。

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， 一项比较不同年龄异齿龙本研究发现， 它帆长得非常快，幼鱼长出帆与它们体型不成比例。