One of my corys

[ChriX]

One of my corys has been acting strange, he was fine at like 9pm, and both the corys were digging around in the sand as usual. But now hes kind of darting around all levels of the water and hitting things, not swimming upright. Then he was lying on the sand on his side.

I saw one doing the same thing in a shop the other day and hence didn't buy any fish from there.

Any idea whats wrong, is there anything I can do??

 

[Inchworm]

Hi ChriX

The first thing I always ask when a cory is involved is what are the water parameters and when was the last time you did a water change?

Is your cory losing his balance and out of control, spinning around maybe? Is there any sign of finrot or fungus like patches on him?

Are any of your other fish sick, or have they been lately?

 

[ChriX]

Is your cory losing his balance and out of control, spinning around maybe?

Yes thats exactly what he was doing, and he looks dead now!

Currently doing water tests and so far I have got 0 ammonia and nitrite, last time I did a water change was just over a week ago. The other cory looks fine.

 

[ChriX]

He is dead now.

The other cory, 3 zebras and platy look normal. Any ideas what could've happened to him?