1, koi fish has always been favored by the majority of fish friends, because he can not only adapt to the low temperature, but also has rich colors, and China has a strong cultural atmosphere. It is said that koi fish is very spiritual, which means that his family is thriving and thriving. However, the space they need is also relatively large, so it is necessary to prepare a larger aquarium in advance, which is mostly raised by general enterprises.

2. There are many fishes in the catfish family, but they are very aggressive. They usually feed on small fish and shrimps, but many fish friends say that they can even swallow fish of the same size as her, so pay attention to the size difference when raising. However, its strong offensive ability also means that it can take the lead in business, so many people like to raise catfish.