what is wrong with my cory?

[ellagor]

I have a Julii cory in a 10 gallon aquarium. Lately, I have noticed that he seems to have lost control of his capability to direct himself when he swims. As a result, he will swim in long loops, and then rest on the bottom of the tank upside down. He moves around a lot less than normal, and will not budge when resting unless brushed by my hand. In this same tank, a month or so earlier, I lost a corydoras paleatus, as well as a glow light tetra to the same symptoms. The tank contains the following inhabitants: 2 neon tetras, 2 glow light tetras, 2 julii cories, and 2 algae eating shrimp. The tank has gravel substrate, with an under-gravel filter, and a small HOB power filter. I have been treating the tank with Maracyn 2 for the past several days.

The tank parameters are:
Nitrates: 10 ppm
Nitrites: 0 ppm
Ammonia: o ppm
pH: 7.5
KH: 6
GH: 9
Temp: 78 F

If anyone has any thoughts on what might be going on in my tank, and what, if anything, I can do to help the fish out, please let me know. Thanks in advance!

[ellagor]

No one has any idea as to what this might be, or how I can treat it? I would like to be able to take some informed course of action before it is too late to help the fish. Any ideas or suggestions would be GREATLY appreciated!

[martijn]

Hi,

unfortunately i don't have an answer or explanation about the fish swimming loops.

About a year ago 1 of my aeneus did the same. Swimming loops and bumping into the glass or wood, while swimming them. He kept laying on the bottom while the other aeneus swam away as i approached the aquarium.

I don't know if he died or he went back to normal.

Martijn

[NotGumbel]

I'm not certain if my cory's behavior coincided with the arrival of a bullying comet goldfish or not. But he became almost motionless, and I thought he'd passed until I tried to net him His eyes had become cloudy, so my LFS gave me some meds to put in (wish I'd kept the label, but they were tabs for cloudy eyes), and now he's fine. As a matter of fact, you can't even tell which one of the two was ill. Sorry that I cannot offer more assistance. Please keep us updated and wishing you and your fish the very best.

Bryant

[irene0100]

Hi,
I lost a few corys to mystery bacterial infection, I treated the tank with Melafix and Primafix together and this saved the rest of them.
no idea what makes the swim funny other than some kind of "swim bladder" infection.
good luck

[ellagor]

Thanks for the help everyone. I have been treating the tank with Melafix for the past week or so, and it seems as though his swimming is improving. Thanks again for the advice!