Bloated Belly Cory - 5 deaths

H

Halois

Registered Member
Feb 22, 2008
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Hello,
About 49 days ago my albino corys gave birth. Around 40+ corys were born and 19 survived. I recently moved 7 of them to my main tank, which is a 10 gallon. It contains:

- Two adult (parent) corys
- Two ghost shrimp
- 1 white cloud minnow

I have no ammonia or nitrate/nitrite problems. I have beginning christmas moss established and good drift wood for hiding spots.

The day after I moved them the three died for unknown reasons.
The next day the largest died. I ended up biting my tongue and having to dissect it to find out why. The belly was extremely bloated and seemed to contain air. The remaining also have this condition.

The remaining are swimming very well, eating ,pooping, taking air, etc. They have no problems other than the bloated issue. Since they were just born and are about the size of my thumb nail, I doubt they are pregnant.

It looks EXACTLY like a giant air bubble attached to its belly. Anyone know why this could happen? Temperature is at 74ºC.
 
Hi! Thank you for the welcome! :)

The two tanks were pretty similar. The fry tank was 2ºC higher than the main tank. I didn't have any bags in the house so I just sucked the fry up in a pipette and move them into the main tank. I let them swim around in the pipette (huge pipette) for a few minutes to get used to the new temperature, though.
 
The use of pipette is very stressful to the fish! As for bloating, I just notice your temperature is very low for cories especially the fry. Using a pipette to transfer the fish is going to be very stressful for them because of the suction and force of the water going in and out, and the confined space in which they will tumble around inside while being moved in and out of it. Regardless of the size, that is a definate no no for any fish. The force done can damage a number of areas of the fish.

Furthermore, your tank is overcrowded. Do you have a spare tank to divide your number of fish?
 
Did you check your pH? We lost two otos recently...bloated, sluggish then died...our pH had crashed and did them in. I hadn't thought to test that until it was too late.
 
Okay, more updates on the issue.

It appears to be a bacterial infection but the only safe meds we could find for fry are the methylene blue, which is the safest, and acriflavine. Be very careful when handling both meds as they can stain of course aside from being carcinogenic. Treat the cories seperately from the other fish if possible and check water parameters before dosing the meds.
 
mwelin said:
Did you check your pH? We lost two otos recently...bloated, sluggish then died...our pH had crashed and did them in. I hadn't thought to test that until it was too late.
Click to expand...

how does a ph crash happen??

Hows the cories doing now Halois??
 
Our pH crash was brought on by driftwood but other things can cause it as well.
 
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