Proteins, vitamins and amino acids may all play a part in the health benefits of eating fish.

蛋白质，维生素和氨基酸在吃鱼对健康的好处中发挥一部分作用。

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SOME fish have special proteins in their blood to stopthem from freezing to death—a remarkable evolutionary trait made no less so bythe fact that biologists have known about it for some time.

某些鱼的血液里存在特殊蛋白质，可以让它们不致冻死——生物学家对此早已有所认识的事实，丝毫不影响对这一显著的进化性状的惊奇。

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Depending on your lifestyle stick with proteins like chicken, eggs, and fish.

根据自己的生活方式，吃如鸡肉，蛋类，和鱼类的蛋白质。

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The acid from the lime, lemon or orange juice changes the structure of the proteins in the fish much in the same way that heat does. (If you make it at home, you can observe the flesh turning from translucent to opaque.) Therein lay my answer.

NPR: Cool and Comforting Ceviche

The dish mainly consists of the freshest of fish marinated in acidic liquids that "cook" it by changing the proteins in the flesh, making it firm and opaque.

WSJ: The Best Ceviche in Lima, Peru | In Search Of

Proponents of genetically engineered proteins argue that there is plenty of research proving the safety of GE fish and meat.

FORBES: Trader Joe's, Aldi, Whole Foods Opt Out of Genetically Engineered Seafood