Help!! Why are my fish staying at the surface?!

[Dopatri]

I have 6 fish in my tank, 3 guppies and 2 balloon mollies. However, since last night, I’ve noticed they’re all swimming around at the surface of the tank. Particularly the guppies. I’ve got no clue why because I have a pump that sprays bubbles so I’m sure there is enough oxygen in there for them. Also my parameters seem ok, my nitrites and nitrates are low. I changed the water yesterday but I added tap safe solution and Tetra safe start bacteria solution because I added a new fish. Also the temperature is 26 C. Is this normal behaviour for these types of fish?

Thank you for reading!!

 

[kwi]

You're getting answers on your identical thread here.

Why are all my fish staying at the surface?

I have 6 fish in my tank, 3 guppies and 2 balloon mollies. However, since last night, I’ve noticed they’re all swimming around at the surface of the tank. Particularly the guppies. I’ve got no clue why because I have a pump that sprays bubbles so I’m sure there is enough oxygen in there for...

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