Odd Harlequin Rasbora swimming behavior?
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Old 03-27-2013, 12:41 PM   #1
bbergeron
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Odd Harlequin Rasbora swimming behavior?


Hey all,

I've had 5 Harlequin Rasbora in quarantine for the last week and I've been noticing some odd swimming behavior from 1 of the 5. At times the odd one out has been seemingly having trouble maintaining a given height in the tank. He'll be swimming at a slight down angle and when he stops swimming he immediately starts to rise up. He must constantly swim in bursts to maintain the height he's at.

This morning for example he was swimming as described above, then after the lights went in he went back to normal swimming being able to maintain height without rising.

Has anyone seen anything similar or could explain this behavior?

Thanks,
Brad
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Old 03-27-2013, 03:06 PM   #2
msawdey
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he could be having swim bladder problems. Others may confirm.
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Old 03-27-2013, 04:02 PM   #3
bbergeron
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Assuming it would be swim bladder problems, it looks like severely cutting back feeding and then trying some skinless green pees would be a solution.

Seems like a safe approach to start with.
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Old 03-27-2013, 04:24 PM   #4
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the peas for sure are. I would try that before going to any medication
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Old 04-08-2013, 06:04 PM   #5
bbergeron
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Hey all, just wanted to give a quick update on this. This does appear to be food related as it can only reliably be seen after feeding and tends to go away after some time.

I had been feeding just ground up flakes but recently started mixing in brine shrimp. 3 of the rasboras exhibited this behavior after they finished eating. All 3 have also gone back to swimming fine after some time has passed.
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