My betta has been suffering from gill flukes over the past few weeks. He was dying from them about two weeks ago so I treated with API General Cure and he made a full recovery, but now the flukes are back. I did another treatment but the flukes are now resistant to the medication and he is still suffering.
He will only eat one or two pellets every other day. He will not move from the floating betta log and only swims up about an inch to grab air, then sinks back into the log.
I think the only reason he has held on so long is because unlike other fish, bettas can get oxygen from the air instead of just their gills. If he wasn't a betta he'd be dead by now due to the flukes destroying his gills. But now I'm worrying it's just making him suffer, and I don't see how he's going to pull through. A bacterial or fungal infection will likely attack him in his weak state, or he will starve to death. I am so afraid of this happening.
I need opinions. Should I euthanize him using a clove oil formula or let nature take it's course? I have only had to put one fish to sleep due to a severe dropsy infection. I love Toki so much and I can't watch him suffer any longer.