What is It Like to Be a Fish

What's It Like to Be a Fish?

认识鱼类

Fish live in water—in lakes, ponds,

鱼住在水里、湖里、池塘里。

aquariums, and even plastic bags.

水族馆里，甚至塑料袋里。

Your pet goldfish can live in a bowl. You canwatch the golden fish slip over and under thecastle, hide among the water plants, and glidequietly around in their underwater world.

你的宠物金鱼住在鱼缸里，你能看到它们在城堡里游来游去，藏在水草中，或者在水世界中静静游动。

A fish's body is just right for living underwater, just as your body is right for living on land. You can swim, but a fish can swim better! A fish'ssleek body is the perfect shape for swimming. Finsstick out from the fish's body. They help the fish toswim. A goldfish's tail fin pushes it through thewater. Six other fins steady, steer, or stop it.

鱼的身体很适合在水中生活，就像你的身体适合在陆地生活一样。 你会游泳，不过鱼游得比你棒!鱼的游线型身体最适合游水，伸出体外的鱼鳍能帮助它们游水。 金鱼的尾鳍负责推动前进，其他六片鱼鳍负责平衡、操控方向或停下来。

Most fish have skin that is covered with scales. Scales help fish to swim too. The scales are hard andclear. They overlap like shingles on a roof. Thesmooth, slick scales let fish slide easily through thewater. A clear slime covers the scales. It helps fish glidethrough the water too. Scales and slime also help to keep a fish healthy. The stiff scales protect a fish's delicate skin from cutsand scrapes. Many germs in the water get stuck in afish's slime coating and are washed away before theycan make the fish sick. Both scales and slime keepwater from seeping into the fish's skin.

大部分鱼的皮肤上长满鱼鳞片，这些鳞片能帮助鱼游水，鱼鳞坚硬而透明，像屋顶的瓦片一样交叠排列。 平顺滑溜的鱼鳞能让鱼在水里轻松自如地穿梭。鱼鳞表面有一层透明的黏液，这也能帮 助鱼在水中游动。 鱼鳞和黏液还有保健作用。坚硬的鱼鳞可以保护鱼纤细的皮肤，避免割伤或刮伤。黏液能挡住水中的很多病菌。 病菌被冲走，鱼就能减少生病的机会。鱼鳞和黏液还能避免水渗入鱼的皮肤。