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They will be quite weak, lye on something, and might have problems staying upright. There might also be some symptoms of disease, such as white spots, reddened gills, swimming upside- down...
When their swimming upside down its usually a sign that their dying
No!
If your fish cannot swim upright, is swimming on its side or upside down, it most likely has a swim bladder problem.
It's not swimming. It's dead. Sorry :(
Keeping Alice and Con amused
an upside down taxi?
No
They descend over a mile underwater to feed, swimming most of the way upside-down!
Upside down
The Battery's Down - 2008 The Unsinkable Molly Black 1-2 was released on: USA: 28 February 2008
If by Dragon fish you mean Arowana then, no it is not normal for one to be swimming upside down. They grow into really big fish (over 40 inches long) so I hope you have a really big tank more than 8 feet long to house it in.