Goldfish coming to the top of bowl and releasing bubbles

  • I've recently got a pair of goldfish and put them in a bowl. I'm trying to keep them happy by feeding them all the natural thing they eat in the wild (and they are loving it too).

    It has been 4 ~ 5 days and things were going fine, until I got them a little bulb to keep them warm and light up the bowl a bit. But, after around 2 hours from the moment I switched the bulb ON, the fish would come to the top, pop their mouth out of the water surface a bit, and gulp air, then they would go down and release bubbles.

    Initially, I thought, that due to low oxygen and high impurity rate in the bowl, they are gulping air from the top and immediately changed the water. But, again when I put the bulb back on, they started coming to the top releasing bubbles.

    I don't know if they are doing this to get more heat (as it's a bit cold these days here) or they are just feeling good doing this... Please help me as soon as possible... :(

    Edit 1:

    • Both of my fish are 2.5 inch (7.5 cm).

    • I change their water every 3 days.

    • When the bulb is removed they discontinue this behaviour.

    What are you feeding them?

    I'm feeding them with pellet food and peas one day, then next day I give them blood worms and repeat the same.

    Is it the brightness that cause them to be like this? If its ok, U can try giving them heat using a tank heater instead of bulb. U can usually purchase them from pet stores that sells fishes.

    I will consider getting a heater but I also want to know the reason for such a behaviour cuz if they are liking the bulb I wouldn't want to change that..

    Gulping air is not a good thing in fish, so I would suggest removing or turning off the bulb. How long between changing the water and turning the bulb on (is it always 2 hours)? How long does it take for the fish to start gulping air? Did you do any tests to see if the PH, nitrates, nitrites, and ammonia where at acceptable levels when this behavior starts instead of just changing the water? Do you do a 25-30% water change? Have you change the temperature of the water when the fish start gulping air?

    Yes, It has always been around 2 hrs after turning the bulb ON. Although I did not do any tests but what I did surprisingly got everything on track. What I did was to get an air pump and an air stone and installed them to my bowl. Since then, the fishes are happy, playful and healthy. They are not even coming to the surface anymore. And yes, I also keep changing 30% de-chlorinated water every 4 days.

  • 0x550x42

    0x550x42 Correct answer

    7 years ago

    I just went to the pet store and got an air pump and an air stone and installed them to my fish bowl. I observed that this solved 3 things :-

    • Air bubbles trap some of the dissolved impurities and release them at the surface.

    • Replenishing oxygen level in water by increasing the surface area of water in contact with air.

    • Generating disturbance at water surface, generating little waves, and continuously moving the inside water which most fishes are fond of.

    I also observed that my fishes are not struggling to breathe anymore. :D

    goldfish are not tropical fish,

    Really?! I didn't know that... If you know where they belong to, pls let me know.. :)

    @0x550x42 They're essentially domesticated carps, which can be found in Europe, Asia, etc.

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Content dated before 7/24/2021 11:53 AM