How to Introduce New Goldfish to Old Goldfish? (PRO Tips to Follow)

How to Introduce New Goldfish to Old Goldfish

When we are petting fish, we must be mindful of the fact that there are many other fishes already living in their home (fish tank). Having said this, when you are introducing your old goldfish to a new one, you cannot just put your new goldfish in the aquarium or fish tank and leave it there. 

If you have also wondered how to introduce your new goldfish to your old one, this article is only for you! So keep reading and find out many interesting things about goldfish introduction! 

How to Introduce New Goldfish to Old Goldfish?

Goldfish usually do not take much time to get acquainted; sometimes, it takes 15 minutes and sometimes 1 hour. It depends on the goldfish. However, before putting goldfish in a new tank, you should consider leaving the fish in the oxygen-water-filled bag.

You will also find pet store employees using these bags. After keeping it in the goldfish bowl or fish tank, monitor the water temperatures and free the fish and the bag water into another fish tank. 

What If I Keep My Goldfish in the Oxygen Water-Filled Bag for a Long Time? 

When considering finding a new place for your goldfish, must you keep it in oxygen-filled water? However, what if you keep it for a long time? 

If you keep your goldfish in the oxygen-filled water for a long time, then your goldfish will die out of oxygen deprivation. The period of your goldfish’s survival in the oxygen water depends on the amount of water and oxygen, which also means the size of the bag. 

Should I Use a Quarantine Tank for My Goldfish? 

When switching your goldfish to a new home (fish tank or aquarium), you must remember to place it with other goldfish. It is because their habitat and growing up in the environment are not the same, which means they may carry diseases. 

Who-is-More-Aggressive-Angelfish-or-Goldfish

It would be best always to consider using a quarantine tank when placing your goldfish in a new fish tank with other existing goldfish to prevent diseases. 

Thus, before putting it into a new tank, place your goldfish in a new one and monitor its behavior and activity; it will help you determine any abnormalities. However, it is time-consuming and needs very patience. 

How Do I Quarantine My Goldfish? 

You cannot just find a goldfish and quarantine it, and you have to follow some methods (mentioned below):  

1. Floating and Timing 

When you introduce your new goldfish to its new home, float the bag with the goldfish in the quarantine tank water. The period should be above 15 minutes. It is to help your fish to get adjusted to the quarantine tank’s temperature.

2. Placing it in the new quarantine tank

Once you are done with the first step, free your new goldfish from the bag and place it gently into the quarantine tank. Please do not mix the water from the bag with the tank because it might contaminate your tank water. 

3. Monitoring is a must! 

To monitor your goldfish, you must give it an adequate time of 2 weeks and notice any signs of diseases. Also, please monitor the water condition and make necessary changes accordingly. 

4. Final Step: Place it in the new tank

After the quarantine period of 2 weeks or more, if you see your new goldfish is not showing any signs of diseases or any abnormal activity, you are free to add it to your new fish tank!

Frequently Asked Questions (FAQ)

Why Is My Goldfish Biting My Other Goldfish?

Answer: To fight over food. Goldfish are usually very peace-loving fish. However, they might fight over food if not fed properly. In addition, if any of the goldfish is territorial, they might fight each other. 

Why Are All My Goldfish Chasing One Fish?

Answer: Because of overcrowding. If your goldfish runs out of space, the fish might feel threatened, and they might want to get rid of competition and chase a fish. 

How Do You Tell if My Goldfish Are Fighting or Playing?

Answer: Biting is the ultimate sign of fighting. If your goldfish is merely playing, the fish will not bite one another. Any harmful activity is a sign of fighting. 

Should I Remove an Aggressive Fish?

Answer: Depends, mostly yes. Let me break it down for you! In general, goldfish are calm. However, some of them may be a little territorial, but that should not be a problem if it does not harm the other fish. In case of harming the other fish, you should immediately remove the aggressive one. 

Conclusion: 

You cannot just put your new goldfish in the aquarium or fish tank and leave it there. Before putting goldfish in a new tank, you should consider leaving the fish in the oxygen-water-filled bag. However, suppose you keep your goldfish in the oxygen-filled water for a long time. In that case, your goldfish will die out of oxygen deprivation.

Consider using a quarantine tank when placing your goldfish in a new fish tank with other existing goldfish to prevent diseases and familiarize them with the new environment. 

Quarantine methods are: 

  • Floating and timing
  • Placing it in the new quarantine tank
  • Monitoring is a must
  • Final Step: Place it in the new tank

It is not guaranteed that you will be 100% successful in introducing your new goldfish to its new environment and mates. However, following the tips and tricks, it will, of course, increase your chances of success. 

Good luck to you on your goldfish introduction lesson, and your goldfish on embarking on its new journey!

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