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Sometimes, when fishes behave strangely is because they are ill or are near to death. Most of the times you see a fish swimming with the paunch up, it's near to death.
Sometimes, when fishes behave strangely is because they are ill or are near to death. Most of the times you see a fish swimming with the paunch up, it's near to death.
It could have a gas bladder problem. I have a fish tank at home and one of the fish that I had would always be having to swim down or up because it couldn't control its bladder. It stuck around with that problem for about 4 or 4.5 years.