Rapid Corner Swimming
 

Not sure whats going on, for the last couple weeks my cherry barbs all seem healthy, eat fine and are playful. For a little while I had been having some ammonia problems but they seem to be under control the last few days. Ammonia and Nitrite are at 0 and Nitrate is around 10-15. Just tonight one strayed from the pack and has been fluttering its tail/fins as if it were swimming really fast in place in the back corner of my tank. The other ones continued to mind their own business and swim around until a few minutes ago. It looks like a few are over there inspecting him. What could be the cause of this? and is it bad? Hopefully I'm just overreacting, i tend to watch my fish a lot and closely when i'm near the tank, and i easily become paranoid about them lol. :roll:

As long as you are monitoring the water parameters and changing water as needed, and not overfeeding,, there is little to be alarmed about. Sometimes despite proper care ,fish become Ill or die. By maintaining good water quality,fish have the best chance of resisting disease .I have also found that sometimes,, if we keep looking,, we find things, either real, or imagined. If one of the fish becomes Ill I would remove it to quarantine if possible. Otherwise destroy the sick fish or treat all the fish with meds.

Yeah the one that was doing it seems back to normal. They're all just lazying around in a corner in the front and seem fine. they all ate like normal when i fed them too.

Glad to hear he is acting better!

Well I'm not sure what she's up to. He's usually active and swimming through the bubbles with the others. But she's kinda just moaping around the bottom now. She ate like normal with the rest of them though earlier today.