Piranha are native to South American freshwater rivers.

鱼是一种原产于美国南部的淡水鱼。

Freshwater fishes live in water with very low salt concentrations.

淡水鱼生活在含盐量很低的水中。

Freshwater fish have the opposite problem.

淡水鱼有相反的问题。

One of the things I love to study are freshwater fishes.

有一样东西是我喜欢研究的——淡水鱼。

The salmon have arrived. This is the world's largest freshwater fish migration.

鲑鱼来了。这是世界上规模最大的淡水鱼洄游。

Typically, this dish calls for the use of freshwater fish, frequently grass carp.

一般来说，这道菜需要使用淡水鱼，通常是鱼。

Ugh! the Canadian put in with distinct scorn. You can keep the freshwater fish!

呸！加拿大带着看不起的神气说，淡水鱼！

There is a sustainable fishery for one of the world's largest freshwater fish.

因为这里有世界上最大的淡水鱼之一，所以也可以发展可持续渔业。

So, when the water rises, the crops are destroyed. Also the freshwater fish disappear.

因此，当水位上升时，农作物被摧毁，淡水鱼也会消失不见。

Over a fifth of the world's freshwater fish species of a century ago are now endangered or extinct.

目前，一个世纪之前世界上的淡水鱼类中超过五分之一绝或已经绝。

So, when the water rises, the crops are destroyed.

Also the freshwater fish disappear.因此，当水位上升时，农作物被摧毁，淡水鱼也会消失不见。

But there's also sounds of croaking of-Amazonian freshwater fish are not well characterized-what should be catfish that we're hearing.

但也有低沉的声音——亚马逊淡水鱼并没有很鲜明的特征——我们听到的应该是鲶鱼的声音。

Alligator gar are the second-largest freshwater fish in North America.

鳄雀鳝是北美第二大淡水鱼。

Freshwater fish came in third with 12.5 percent.

淡水鱼以 12.5% 位居第三。

Freshwater fishes have to get rid of water constantly to keep their cells from bursting, which means they pee a lot.

淡水鱼得不断排出水来阻止它们的细胞炸裂，这意味着它们要经常排尿。

The Bolson pupfish is a small freshwater fish found in northern Mexico.

Bolson pupfish 是一种在墨西哥北部发现的小型淡水鱼。

So, usually it's fish, and I'll alternate ocean fish, freshwater fish, usually broil or pan-fry.

所以，通常是鱼，我会交替使用海鱼、淡水鱼，通常是烤鱼或煎鱼。

Wild freshwater fish, in particular, tend to have many bones, which I find annoying.

尤其是野生淡水鱼，往往有很多刺，我觉得这很烦。

For example, pound for pound, beef requires 15 times more feed to raise than carp, a freshwater fish farmed all over Asia.

例如，一磅一磅的牛肉需要比鲤鱼多 15 倍的饲料，鲤鱼是一种在亚洲各地养殖的淡水鱼。

In 2018, South Africa released a report on biodiversity which revealed that freshwater fish were the most threatened species group in the country.

2018年，南非发布了一份关于生物多样性的报告，报告显示淡水鱼是该国最受威胁的物种群。