What should novices pay attention to when raising fish? How big is the fish tank

Novice fish culture should first choose a fish tank. Don't use a too large tank for the first time. It's OK to have a length of about 60 cm. Generally, it's better to buy a rectangular one. If you want to buy fish after buying the tank, you can buy some cold water fish, such as grass gold or Koi. If you want to buy tropical fish, you should prepare heating rods. Usually feed pellet or flake feed, and pay attention to timing and ration. Every once in a while, you have to change the water for it. 1、 How big the fish tank is, fish culture must have a fish tank first, so for people who raise fish for the first time, how big the fish tank is to buy is a problem. At present, there are basically two kinds of fish tanks on the market, rectangular and circular. Novices are more suitable to use rectangular fish tanks. In addition, the size of the aquarium is mostly related to the size of the fish raised. If it is a small tropical fish, the length of the aquarium can be about 60cm. If you raise arowana, the aquarium should be larger. 2、 In addition to the size of the fish tank, what fish to raise is also the primary problem for novices. It is generally recommended that some fish with solid skin should be raised, and it is recommended that novices raise cold water fish first, such as Caojin and Koi. Tropical fish can also be raised, but some places are too cold in winter. It is best to have a heating rod to heat it, otherwise the low water temperature will lead to the death of fish. 3、 If you want the fish to grow healthily, you must pay attention to feeding. According to the different types of fish, the choice of feed is also different. If you don't want to trouble, you can also buy professional fish feed directly. Feeding must be regular and quantitative, so that the fish can form a habit. When the time comes, they will feed. The dosage should be controlled well. Don't let there be too many residual bait at the bottom, which is also very troublesome to clean up. 4、 How often to change water is also an essential step in fish culture. And fish have different habits. Some like new water and some like old water. For fish that like new water, change water frequently. Usually change it every 3-5 days. For fish that like old water, change it every 15 days. The amount of water changed each time is controlled at about one fifth. If you change too much, it is easy to stimulate the fish and affect its health. （XinShouYangYuYaoZhuYiShenMe，YuGangMaiDuoDaDeGeKuo）