Weird activity...

[Josh Jennings]

I have a 60 gal FW tank. It's completely cycled and the ammonia, nitrate, & nitrite are all at 0, and the Ph is at 7. Here's the question... One of my Bala Sharks is staying right by the heater and is head up almost vertical. All the other fish are fine. My Bala is eating and doesn't seem to be gulping for air but has been in this vertical position all day. Any ideas???

 

[Munger22391]

One of my peacock cichlids was doing the same thing the other day and I was freaking out so I clean the whole tank and did a 25% water change and then he stopped doing it, dont know if it will work but I didnt think it would for me and it did

 

[Josh Jennings]

Thanks... I did a 50% water change this afternoon and it went right back to it.