Under normal circumstances, it takes three days for a new fish to enter the tank to be considered to have passed the dangerous period. When the fish is in a critical period, do not feed food or change the water first. This will only further irritate the new fish that enter the tank. You need to wait until the critical period passes before changing the water for them.

What should new fish pay attention to during the dangerous period?

1. Do not feed: Do not feed the fish when it is in the dangerous period. Because at this time, the fish may not eat because they are not familiar with the surrounding environment, and the residual bait in the water will be decomposed by microorganisms and turn into ammonia nitrogen, which will be toxic to the fish.
2. Do not change the water: Newly bought fish cannot change the water frequently. Changing the water will cause irritation, causing it to need to adapt again. Repeated water changes may be dangerous and cause the death of the fish, so during the dangerous period There is no need to change the water.

3. Don’t disturb: In addition to not feeding or changing water, don’t disturb the fish at ordinary times. Any disturbance, including light and sound, may affect its health or even cause its death.

4. Observe the status: After the critical period, you must continue to observe whether its status is normal. If the status is not very good, it is recommended to continue to put it in a quiet place to rest.