Suspicious Green Neon Tetra

[swivvr]

After putting my new 13 green neon tetras in a 5-gallon quarantine tank, I put in the med trio. On the second day (today) I'm seeing one neon tetra separated from the group and swimming unnaturally. Its body is leaning to one side, and it is having trouble staying right sided. 

The parameters of the tank are 0 ppm ammonia, 0 ppm Nitrite, 7.6 ph, and <10 ppm nitrate.

If anyone knows what the problem is, please help me deal with this and thank you.

[swivvr]

Update: Unfortunately, today the fish is no longer with us. Its swimming problem had quickly turned deadly to the point where it was spiraling uncontrollably. I had to put it out of its misery and euthanize it. 😢

Edited August 26, 2022 by swivvr

[Colu]

It could be a reaction to the medication it may have already been weak and the meds pushed it over the edge 

[Chick-In-Of-TheSea]

On 8/26/2022 at 6:54 PM, swivvr said:

spiraling uncontrollably

That happened to one of the first fish I had as a kid. I still don’t know why. It’s body stayed contorted into a curved shape and it just went in circles. We had to make the same decision. ☹️