Corydoras Sterbai with swimbladder problem?

All posts regarding the care and breeding of these catfishes from South America.
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corylass
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Joined: 14 May 2006, 16:02
Location 1: Scotland

Corydoras Sterbai with swimbladder problem?

Post by corylass »

Hi, can anyone please advise??

One of my cory sterbai's has lost colour around the head and is rolling over and over at the bottom of the tank.

He's pale and slightly red around the gills. Checked the water params -

Ammonia 0
Nitrite 0
Nitrate 8
pH 6.7
Temp 25
Substrate - small rounded gravel

I have just done a 30 percent water change. It's a bit strange though to have had the same problem with three different corys from the same batch. Rest of the fish look fine. I'm thinking it must be a swimbladder problem but really don't know now. I've just treated the tank with interpet swimmbladder treatment. Any suggestions anyone? Please!!
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drpleco
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Post by drpleco »

What makes you think swimbladder problem? Im my experience, swim bladder problems cause a fish to either sink or float, not spin around. Spinning usually comes in fish that are about to die from some bacterial or other disease. Is your tank otherwise "healthy?" (ie...good parameters, no new fish, plenty of space and hiding places....)

How often do you change water and did you declor? What's in interpret? Swim bladder problems that are not caused by something else (poor conditions, illness) are pretty rare in my experience and have been limited to fancy goldfish and other compact fish. I would not expect to see it in a wild sterbai (or a tank bred fish that has not been horribly inbred, which probably hasn't had time to happen yet.)

You may be right, but look at the bigger picture here first.
corylass
Posts: 2
Joined: 14 May 2006, 16:02
Location 1: Scotland

Post by corylass »

drgold wrote:What makes you think swimbladder problem? Im my experience, swim bladder problems cause a fish to either sink or float, not spin around. Spinning usually comes in fish that are about to die from some bacterial or other disease. Is your tank otherwise "healthy?" (ie...good parameters, no new fish, plenty of space and hiding places....)

How often do you change water and did you declor? What's in interpret? Swim bladder problems that are not caused by something else (poor conditions, illness) are pretty rare in my experience and have been limited to fancy goldfish and other compact fish. I would not expect to see it in a wild sterbai (or a tank bred fish that has not been horribly inbred, which probably hasn't had time to happen yet.)

You may be right, but look at the bigger picture here first.
Hi, and thanks for the reply drgold. My tank is healthy all fish are fine and water parameters have been excellent since getting the corys a few months ago. I do water changes once per week 30 percent with gravel clean and add tetra aquasafe dechlor to water raised to same temp as tank water.

The tank is well planted with loads of hiding places. Other fish in the tank are neon tetras and 2 gold rams. No problems with them at all.
cartouche
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Post by cartouche »

I had a similar experience with my sterbai fry. They rotated around the axis. They also lost colour and turned pale. I had to liquidate two tanks with 200 fish, because they started to die on a mass scale. I delivered them to a laboratory and they couldn't find anything extraordinary except Aeromonas hydrophila on the skin. But I doubt if it was responsible for the neural symptoms.

In any case, I would remove the sick fish into another tank as fast as possible. Then you will see.
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