I'm wondering if I should euthanize my fish and if so how

Any chance of a picture and short 30 second video of the fish?
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Do a 75% water change and gravel clean the substrate every day for at least 1 week or until we work out what is going on. This will help dilute anything bad in the water and might help.

OK, Here's a picture:
And here is a video:

davidluiz32 said:

OK, Here's a picture: View attachment 118457
And here is a video:

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Have you done the 75% water change and cleaned the substrate yet?

Colin_T said:

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Do a 75% water change and gravel clean the substrate every day for at least 1 week or until we work out what is going on. This will help dilute anything bad in the water and might help.

Click to expand...

Make sure that when you refill the tank, you temperature match the new water to the tank temperature, and use a water conditioner.

I haven't gotten a chance to go to the store and get water, but I will be able to clean the gravel tonight, or at the very worst tomorrow morning. The only water conditioner I have is pH down. Also, how do I match water temperature? Do I put the water in a bucket and put the tank heater in it?

Barry Tetra said:

Colin salt dosage is 1 table spoon per 20 liters of water for soft water and 2 table spoon per 20 liters for livebearers and other hard water fishes.

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Thank you

davidluiz32 said:

I haven't gotten a chance to go to the store and get water, but I will be able to clean the gravel tonight, or at the very worst tomorrow morning. The only water conditioner I have is pH down. Also, how do I match water temperature? Do I put the water in a bucket and put the tank heater in it?

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I usually add some boiling water to the bucket of water I'm going to add, float a tank thermometer in it and add hot water until it's close to the tank temperature, within a couple of degrees at least. Abrupt changes in temperature put the fish into shock, so keeping it close to the same temperature is important.

Is your tapwater not suitable for the tank?

pH down isn't a water conditioner, a water conditioner removes chlorine and chloramines from tap water, both of which are also toxic to fish.

Why are you trying to adjust the tank pH?

I don't really add pH down and am not currently; I think it's just something I bought around the time I started the tank. I prefer using spring water rather than tap water because I don't really know what's in it. I've seen some reports that say that various drugs have been found in tap water, so I just feel safer using spring water. Thanks for your tips on matching water temperature; I'll use it when I do the water change.

I would say the vast majority of fish keepers use their tapwater which they condition with a tap water conditioner such as Seachem Prime, or API Tap Water Conditioner. Those who don't use tap water, probably use rain water or well water because the fish they keep require a different level of hardness or PH.

The fish has been bashed and its swim bladder has failed. Whack it on the head.

So I should kill him?

davidluiz32 said:

So I should kill him?

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Sadly yes.

We euthanized him using clove oil, he is now resting peacefully. Thank you to everyone for all of their helpful tips.