红鲫鱼 Red crucian carp 【hóng jì yú 】

红鲫鱼又名金鲫鱼或草金鱼，外形与日本锦鲤相似，它是红黄鲫鱼在人工饲养时发生变异而形成的品种，是金鱼最古老的一个品种。其颜色有火红、红白相间等。由于红鲫鱼饲养条件简单，饲养成本低廉，杂食性，生长快，故可用于初学者进行养殖技术的自我训练，因此他是一个很受欢迎的物种它主要分布在亚洲，且生存能力强。

百度翻译提供：

Red crucian carp, also known as golden crucian carp or Grass Goldfish, is similar to Japanese Koi in shape. It is a variety formed by the variation of red and yellow crucian carp in artificial breeding. It is the oldest variety of goldfish. Its colors are fiery red, red and white, etc. Because the red crucian carp has simple feeding conditions, low feeding cost, omnivorous and fast growth, it can be used for beginners to carry out self-training of breeding technology. Therefore, it is a very popular species, which is mainly distributed in Asia and has strong survival ability.