New fish

[ashwina]

I have 7 small goldfish in my tank. They have been together for the past 6 months. I added two smaller goldfish in the tank today and the old ones are scared and hide behind the plants and stay on the travel. Please help is this normal


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[NigelK8485]

It's not an answer to your question but what size tank is this? That's a lot of goldfish and it'll require a large tank, over 100 gallons.


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[Mebbid]

It is fairly normal behavior, but as Nigel said - You are going to need a very large tank for that many fish.

 

[ImACoolguy]

Average size for an adult grown goldfish is 10-12 inches. Unless you have a large tank like Nigel and Mebbid said you will be seeing some water condition problems very soon.


Caleb

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[smilemadeofsun]

What is your WC schedule with that many goldfish? They must be producing a ton of waste!

To answer your question, whenever new fish/decor are introduced into the tank sometimes fish need a minute to adjust to the change of surroundings. I wouldn't worry about that part too much. Just be prepared that if you have 7+ goldfish in a small tank that you're either going to have to re-home them as they grow, or they will most likely die a slow death as their body's growth is stunted while their internal organs continue to grow. Being essentially crushed from within over time sounds like something I wouldn't wish on my worst enemy, much less a fish under my care. Also that tank will get harder and harder to keep clean and stable.

Hopefully you have them in a 125 gal and we're all just being cautious