1. What is better in the fish tank for raising koi fish? It is better to keep nothing in the fish tank of koi fish. Koi is suitable for bare tank cultivation, because it originally lived under the water and had the habit of arching mud and feeding, so it is easy to make a mess by it if it lays sand or aquatic grass mud. If you really want to put something, you can put some pebbles, so that the fish can't move, and it can also play a certain filtering effect and increase the overall ornamental value, which is a good choice.
2. What should we pay attention to in polyculture of koi fish1. Similar body shape: First of all, we should pay attention to the body shape of fish in polyculture. It is less difficult to mix fish with similar size, because they are similar, so they don't want to eat each other. As long as they are gentle and not easy to fight, it is safer to mix fish. If you bite every day, it will also cause certain losses.
2. Similar habits: Fish raised together should have similar habits. For example, their requirements for water temperature and ph, if they are all fish that like weak acidic or weak alkaline water quality, it is more convenient to adjust the water quality. If one likes weak acidity and the other likes weak alkalinity, no matter how to adjust, one party will always be unable to raise the state.
3. The fish tank should be large: In order to ensure that the fish will not fight when they are mixed, they must prepare enough space for activities, otherwise some fish have territorial awareness, especially during estrus, and it is easy to fight if they are too crowded.
