No matter what kind of fish you raise, you can't use tap water directly. If there is no fish tank, you need to re-disinfect and open the tank. Soak the fish tank with potassium permanganate for 3-4 hours, then drain the water and wash it several times. Then we should inject the dried tap water into the tank to ensure that the residual chlorine has dissipated and will not cause harm to the fish.
Small fish mouth is too small, feeding fish food may not eat, so be sure to choose the right bait. Can use brine shrimp, red nematode, etc., preferably after freezing treatment, which can play the role of sterilization, so as to avoid fish swallowing disease. Usually once a day can be fed, too much can not eat, but also pollute the water quality.
Small fish have higher requirements for water quality, but they can not withstand water quality fluctuations, so water change should not be too frequent. Can change every week normally, can use siphon law, the water in crock is drawn out from the bottom, also can clean up a few filth so. Then pour new water from the wall of the fish tank, do not change the water violently, otherwise the temperature change will lead to the death of the fish.
When raising small fish, you must pay attention to oxygenation. Although it is not necessary to oxygenate all day, it is necessary to oxygenate for 1-2 hours every day. If the dissolved oxygen in the water body is insufficient, it is very easy to cause the fish to feel unwell, or even die directly.
