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My Goldfish Is Acting Weird, Why?

Ok, my goldfish, Tangerine, is acting weird for some reason. This is my first time having a goldfish. I got her today and I got her a tank. The tank is 15 cm long, 11 1/2 cm wide, and my fish is 5 1/2 long. Is the tank too small for her? If not, here is another one. She keeps wonder around energeticly, looks like she is trying to find something. Sometimes, I left her there and she just froze there. Doing nothing. She’s not floating on top though. I just fed her too. Also, her mouth keeps on open and close open and close. Is she suppose to be like that? Please help! I don’t want my goldfish to die. In the tank, it is a little dirty. I’m putting the water out so it can become “aged water.” Once it become aged water, I’ll clean her tank. P.S- Sometimes, she would come to the surface and her mouth will still be open and close and open and close. 2 seconds later, it feels like she got shock by something and got scared and swim back down.

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2 Responses to “My Goldfish Is Acting Weird, Why?”

  1. BMW328ig says:

    Goldfish are naturally inquisitive about their natural surroundings so your goldfish might just be exploring her surroundings. If your goldfish is constantly up at the top of the fish tank then she might be gasping for air from the water being dirty.
    Does the tank have a filter? Goldfish don’t really need a filter but it does help to move the water and keep it clean. I think you should try to change the water and see how she does. Did you put any chemicals in the water?
    If you need more help, please visit my blogs and I can help you out more once I get specifics.
    Good Luck!
    bmw328igrl
    bmw328igrl.wordpress.com or

  2. A says:

    You may not belive this but anything under 20 is too small, depending on species 20 may be too small.
    Now I see a couple of things that could be the issue. The first is when you said new tank. Which would leave me to guess that you filled it up with the aged water and put her in?
    You will have to read up on the Nirtogen Cycle for your aquarium. As a beginner this will be very important. The first step to a healthy tank.
    Does your tank come with a filter? If not you will need one. Well aslo a bigger tank. Or you may have to return her. You may have been told by the pet store clerk that one inch per gallon or the tank you were using is fine. They would be wrong in telling you this if they did.. Each fish has it’s own needs to a tank. It’s the buyers responsibility to find out what that is :) But, we do all make mistakes so, we live and learn but right now we will see what we can do to help.
    The reason he is opening and closing his mouth is that he is stressed. New enviroment that and a small tank. Your goldfish is a pollution creating machine. It moves it through it’s gills and waste so you will have to do daily partial water changes to keep ammonia down. A build up of this can really fry your fishes gills. Do this daily and see if it doesn’t help. What you will need to do for sure is go back to the pet store and get some dechlorinator, this will be faster then letting the water sit for a day or so.

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