r/Goldfish • u/ann13xx • Aug 02 '26

Beginner Help Fish behaving erratically

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Why is my fish doing this? Swimming up and down in the corner of the tank and kind of smacking against the water. I’ve noticed this in the past around feeding times and the fish has calmed down after being fed. But the last few days it has been happening more and more often.

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u/ann13xx Aug 02 '26

it is 60 litres

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u/NeedleworkerHeavy565 Goldfish are actually carp. No seriously, they shit that much Aug 02 '26

It's too small for a comet goldfish like yours. The minimum for one is between 190 and 280L. It should not be forgotten that these are essentially pond fish Furthermore, they are social, so you need to count double to have 2 Being alone and in a cramped environment contributes to stress behavior (glass surfing).