天使鱼 Pterophyllumeimekei)【tiān shǐ yú】

天使鱼，亦译梯纹鱼。神仙鱼(angelfish)类数种常见水族箱鱼的通称。是丽鱼的一种，可说是热带鱼的代表鱼类。背鳍和腹鳍很长，极像天使展开的翅膀。原产地为南美的亚马逊河，现在在其它地方已很容易看到，但在原产地反而不容易看到了。

百度翻译提供：

Angel fish, also translated as ladder fish. Angelfish is the general name of several common aquarium fish. It is a kind of beautiful fish, which can be said to be the representative fish of tropical fish. The dorsal and ventral fins are very long, very much like the wings of an angel. The Amazon River, which originated in South America, is now easy to see in other places, but it is not easy to see in its origin.