Hello and welcome. My name is ***** ***** I’m a biologist with over 40 years of experience keeping fish. I’m sorry to hear about this problem. Can you send me a picture of your fish so I can see his condition? You can upload a photo by clicking on the paper clip icon in the toolbar at the top of the space where you type. Instructions should pop up. Thank you.
It just got here. Thank you. I’ll take a look and be right back.
Thank you for waiting. I feel bad to tell you this, but I believe you deserve honesty. He is in critical condition. I don’t know if he can be saved. He has very severe fin rot. The pet store steered you wrong. Bettafix is a very mild medication and I wouldn’t expect it to treat rot like this. Normally, I recommend Kanaplex, but very few pet stores stick it. It has to be ordered online. You can buy it on Amazon:
You do need to have at least a 5 gallon tank in order to dose it correctly. If you can find it locally, you could also try Furan 2. What concerns me is that the fin rot is so advanced, I don’t know if he will respond to these medications.
Severe fin rot has become very common in bettas. Breeders have resorted to intense inbreeding to get fancier fins and more colors. That inbreeding has also resulted in a poor immune system and shortened lifespan for many bettas. Not a day goes by that I don’t deal with this. Some fish respond to the medication, and some don’t. All you can do is try.
If you have more concerns, just let me know. I’ll help in any way I can.
Because he is still eating and swimming, I do think it’s worth trying treatment. As for getting worse when you started the Bettafix, that medication had nothing to do with that. The condition usually gets worse, and that medication is not strong enough to stop it.
I understand that you did everything to care for him properly. Unfortunately, that doesn’t guarantee good health. That inbreeding I explained above has a lot to do with it.
He may be one of those who responds to treatment with a stronger antibiotic. I just wanted to warn you that he may not. There is no way to predict which fish will. I do think it’s worth a try.
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