Fish pointing downwards!

[Neleono]

Hey friends,
So I'm back with another not so good fish today. In a previous thread I troubleshot with many members to try to figure out the death of 2 guppies (link here https://www.fishforums.net/threads/2-fish-dead-with-no-visible-cause.463696/#post-3959821). We didn't come up with a main cause, more like a few possible ones all of which i was able to easily fix. 2 days ago, i went in the fish room to see one of my sister's tetras swimming pointed downwards. I did some reading and found nothing out of the ordinary, I tested the water with nothing strange, I then did a water swap and the problem seemed to be fixed. Today i went in the room again to see a downwards pointing fish. I looked at it and it seemed fine, water test was normal, and I just changed the water, crossing my fingers that that will help again. It seems that a water change is a teperary fix but how do I solve this? Can I help him or is hope gone. I will put tank stats below, please ask for anything you might need. Thanks.

Ammonia : 0
Nitrate : 10
Nitrite : 0
Hardness : 170
Chlorine : 0
Alkalinity : 140
pH : 7.1
Temp : 75
Tank environment : 10 gallon with 4 fake plants, a small live plant, 4 fish, airstone

 

[Fishmanic]

I've seen that with a few of my tiger barbs which appears to what you have there. They died with a few days. Not sure the cause or the treatment. Maybe @Colin_T can give better advice.

 

[Colin_T]

Is the fish eating normally?
What does its poop look like?
What is the fish being fed?

Stop feeding dry food for a week and use frozen of live food only. It might have air trapped in its intestine.

See if the fish floats when it's not swimming.

Post a video of the fish moving.

 

[Neleono]

The fish eats normal, poops normal, and eats tetramin tropical flakes. I will try to get a vid of him swimming weird and all of that in the morning (hes not doing it rn because i did a water change and that seems to fix it for a day or 2)

 

[itiwhetu]

He looks like he is full grown. Sometimes we just can't fix things. Aquarium fish go through hell before they end up in our tanks. All we can do is give them the best time we can for the rest of their lives. He will not be bothering any other fish just let him be.

 

[Neleono]

Does that mean he's not gonna last to long?

 

[itiwhetu]

No, you might find he just hangs around for ages especially if he is eating normally