API BETTAFIX Antibacterial & Antifungal Betta Fish Infection and Fungus Remedy 1.7-Ounce Bottle
$4.11
Price: $4.11
(as of Oct 06, 2025 10:29:22 UTC – Details)
Treat and heal wounds, diseases and infections with API BETTAFIX Antibacterial & Antifungal Betta Fish Infection and Fungus Treatment. This natural antibacterial remedy promotes rapid re-growth of damaged fins and skin. Use it to treat ulcers, mouth fungus, fin and tail rot and when you see signs of bacterial and fungal diseases like red ulcers, slimy patches or cottony growths. It can also be used to help heal wounds and tissue damaged by handling, netting or fighting. Contains healing melaleuca, a variety of tea tree. API BETTAFIX Antibacterial & Antifungal Betta Fish Infection and Fungus Treatment also helps heal open wounds and tissue damaged by handling, netting and fighting, and it promotes rapid re-growth of damaged fins and skin. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.
Is Discontinued By Manufacturer : No
Language : English
Product Dimensions : 3 x 3 x 8 inches; 2.4 ounces
Manufacturer recommended age : 1 month and up
Item model number : 93B
Date First Available : June 20, 2004
Manufacturer : Mars Fishcare
ASIN : B00025YVRQ
Best Sellers Rank: #2,965 in Pet Supplies (See Top 100 in Pet Supplies) #2 in Fish Medication & Health Supplies
Customer Reviews: 4.3 4.3 out of 5 stars 7,288 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Contains one (1) API BETTAFIX Antibacterial & Antifungal Betta Fish Infection and Fungus Remedy 1.7-Ounce Bottle
Heals bacterial infections, repairing damaged fins, ulcers, and open wounds and promotes regrowth of fins
Treats newly introduced fish to reduce risk of disease outbreak and heal wounds and tissue damage
Contains healing melaleuca, a variety of tea tree
Use daily for a week when treating infections and for three days as a preventive when adding new fish
Customers say
Customers report that the remedy works wonders for their betta fish, showing improvement within a day, with fins growing back very nicely. The product receives positive feedback for its quality and effectiveness, with customers noting their fish look like a whole new fish and are more feisty. While some customers report their fish’s fin rot completely healed, others mention that it persisted despite treatment.
13 reviews for API BETTAFIX Antibacterial & Antifungal Betta Fish Infection and Fungus Remedy 1.7-Ounce Bottle
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$4.11
Ben Kozak –
Lifesaver!
The Beta Fix water additive was a real life saver for us. We had to make an emergency move with one of our fish into another tank, and this product made the transition so much smoother. It worked quickly, and the fish handled the move without any issues.Itâs easy to use, effective, and gave us peace of mind in a stressful situation. Definitely something worth keeping on hand for any fish ownerâyou never know when youâll need it.
Kayla Greene –
Helped regrow my betta’s tail!
This stuff really works. My betta’s tail had some black on the ends and now he is regrowing what he lost. He is a happy betta. Good value for the money, the amount you use will help it last a long time, it doesn’t make your tank dirtier, good size bottle, and mine was intact when I received it. Thank you for making this product 🙂
SlimChiLion –
Good Product
There are some scare reviews on here. First, this medicine does not kill fish. Itâs a leaf extract. Itâs all natural and API is a trusted brand in aquatics for decades for a reason. Odds are, those persons treated their fish too late. Fin rot is fatal when it reaches the body. You would not have so many five star reviews if that were true.On to the medicine. Itâs smells great, and it worked great. Itâs easy to dose and works quickly. After the seven days of recommended treatment, the fish looks healthy and all is well.Enough said.
Harold Seward –
small bottle
It started working on my fish but the bottle was super small and did not last long, lasted less than a week.
LMB 925 –
Works great against fin rot
My betta fish didn’t look great when I got him, but he was a color match for one I’d bought with my nieces and nephew that didn’t make it through his first water change. I was careful, but the other guy just didn’t handle the stress of the new tank. I’ve had many betta fish over the years. They normally last about 6/7 years. I hadn’t had one in a while and I felt it would be a fun thing to get for the kids. So, when the little guy didn’t make it I rushed out to the pet store looking for a near match so the kids weren’t upset.The only similar fish the pet store had looked a little tired with fins that weren’t great, but not that bad. I took a chance and thought he might do better with a good water change, nice size tank, and some TLC. I used a little aquarium salt at first as I’d read it fixes most issues like these, but it wasn’t enough. His energy was good, but his fins got worse, and clean water changes weren’t working. I think they were stressing him out. It didn’t look like normal fin rot. The tail had gotten really pointy and strange looking. I’ve never had that happen with a fish before. In fact, I’ve never had to deal with fin rot at all. After some research I bought this to give it a shot and within a week the little guy has a nice, normal, fan-like tail instead of the pointy rotten one. He’s doing great. I’ve never used a product like this, so I have nothing to compare it to. I didn’t know what to expect, but I’m thrilled with the results. The little guy is flaring again and swimming all over the tank. I’ll keep this product on hand as long as I own fish to ensure I have it if they need it.I think when using this product, like with any chemicals for your fish, that you follow directions and err on the side of caution so as not to use too much. My little guy is recovering and I’ve stopped using the product. There’s a very small hole in the tail, but I think at this point the aquarium salt and frequent clean water will heal that.
Ashley –
Damaged product
Product damaged. Leaked everywhere. More than a quarter of the bottle empty. The cap was not screwed on all the way. No safety seal to stop it from leaking everywhere.
Mapie’s Friday –
Danger, Will Robinson!!!
1) this “heals” (I think) by irritating your fish until it produces a better slime coat 2) it IS an antibacterial/antimicrobial/antifungal for the water so if your water is scummy or full of algae, it will clear it up in 2 days. It will also kill your plants because it messes up the water balance. 3) if your Betta is on death’s doorstep, do NOT use this. If you try it, do about 10% for 2 days to see how he tolerates it. The weaker the fish, the more likely this will kill him instead of helping 4) make D**NED sure you’re water balance is PERFECT before adding 5) be aware that this will send your KH and TAL through the roof and mess with your pH, even in a perfect tank. MONITOR CLOSELY.I can’t say never to use this. It really did clear up the bacterial biofilm on the surface of my tank for a while BUT I only used full dose on the 3rd day. Water parameters went psycho, after that. Betta quit eating… I hope he survives.I recommend finding a good Betta forum online before getting to desperate place. I believe that most Betta illnesses are a result of malnutrition, now. Ignore the employee at the Big Box store who says to give them one lekker every other day and feed them according to the directions on their food. Big Box starves them so the water in those cups doesn’t get too dirty.I’ve lost 3 bettas that I think the cause was starvation or malnutrition from following Big Box advice (and waiting until they were nearly don’t to try bettafix, as stated, they were too weak for it to do anything but stress them the rest of the way). I kept treating the symptoms in desperation, not knowing the cause.But seriously. Monitor CLOSELY if you try it. Start low dose. It has some benefits but don’t use it to try to “save” a sick fish.
Dea –
Saved the life of my beta
Saved my betas life. My beta was sick wouldn’t swim much got this after 2 days he is healed THANK YOU FOR THIS PRODUCT
igli nushi –
Aplicato su i guppy e funziona davvero bene
Prabhjot –
The very best medicine to treat fish fins infection. I have beta fish who had fins infection. I noticed red spots on his fins and some fins are lost. So I put half teaspoon everyday to fish tank for 7-8 days. Surprisingly, my fish got much better and his fins started growing back. I have also attached before and after pics of my fish.
Michael –
My fish had an eye that was popping out of its socket and this stuff cleared it up within a few days , definitely recommend
Amazon Customer –
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Kevin Lau –
It zen out my Betta. recommended product. Great for fish quarantine, or stress after a water change.