I don't have the heart to euthanize my betta, but I don't know what else to do

My little girl is about 3 years old now (she was a pet store fish so I don't 100% know her age). About 3 weeks ago I noticed a lump on her side, was worried it was a tumour but I suspected it was just a muscle mass. I'm almost certain it's a tumour now. She also started getting bloated about a week after I noticed the tumour. It's not dropsy (which I suspected), she isn't pineconing, she's eating, swimming around, and breathing normally. She's still acting like a completely normal fish, except for her GIANT belly and the tumour on her side. I'm worried she's uncomfortable or worse, in pain, but she doesn't show it. I just can't euthanize her if it gets to that point, every time I even think about it I can't help but cry. I've put pictures, just incase someone can identify it as something curable; I'm pretty much willing to do any kind of treatment to help her, other than vet treatment, as I unfortunately don't have access to a fish specialist in my area. Basically, I'm asking for any kind of advice that can help, she's my first fish so I'm not an expert, and at this point I need help from people other than google.





*We had a go with fin rot a few months ago so that's why her fins are a bit rough
**I know her plant is a bit dirty, her tank is due for a clean today

 

It looks to be an internal tumor. Unfortunately there's nothing that can be done, but they're usually harmless and just a cosmetic issue. It shouldn't affect her in any way, just be careful of food portions and she'll be fine.

 

I think she'll be fine and have a good quality of life even with the tumor if she's still eating, breathing fine, and swimming around.

 

It looks to be an internal tumor. Unfortunately there's nothing that can be done, but they're usually harmless and just a cosmetic issue. It shouldn't affect her in any way, just be careful of food portions and she'll be fine.

Ok, thanks for that reassurance. Is there anything I can do just to make her more comfortable with the bloating?

 

Ok, thanks for that reassurance. Is there anything I can do just to make her more comfortable with the bloating?

You can feed smaller amounts of food more frequently instead of meals and just provide more resting places.

 

I had a black phantom with lots of knots and tumors, she actually was the longest lived of the school at 6 years old. She looked so bloated all the time, but she lived like that for a good two years. It all depends where the tumor puts pressure on other organs. If she is not showing discomfort, I would leave her be as well.