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🐠 Keep your aquatic community thriving—because your fish deserve the best!
API MELAFIX is an 8-ounce liquid antibacterial remedy formulated with natural tea tree extract to rapidly heal bacterial infections, damaged fins, ulcers, and open wounds in freshwater fish. Designed for daily use over 7 days for treatment or 3 days as a preventive when adding new fish, it protects your aquarium without affecting water clarity, pH, or beneficial bacteria. Trusted by aquarists for over 50 years, MELAFIX ensures a healthier, vibrant aquatic environment.


















| ASIN | B0002567SW |
| ASIN | B0002567SW |
| Allergen Information | Apple Free |
| Best Sellers Rank | #2,211 in Pet Supplies ( See Top 100 in Pet Supplies ) #12 in Aquarium Water Treatments |
| Brand Name | API |
| Customer Reviews | 4.5 4.5 out of 5 stars (15,035) |
| Date First Available | June 20, 2004 |
| Department | Medication |
| Global Trade Identification Number | 00317163080115 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Type Name | Aquarium Antibacterial Remedy |
| Item Weight | 0.6 Pounds |
| Item model number | 11H |
| Liquid Volume | 8 Fluid Ounces |
| Manufacturer | Mars Fishcare |
| Manufacturer | Mars Fishcare |
| Manufacturer Part Number | 11H |
| Model Number | 11H |
| Product Dimensions | 5 x 2 x 12 inches; 9.6 ounces |
| Target Species | Fish |
| UPC | 317163080115 317163480113 |
| Unit Count | 8 Ounce |
B**Y
This is a great product
I love this stuff! It healed my fish back to her happy normal self! She had severe fin rot and a clouded eye. You just have to pay attention the the dosing instructions and adjust dosing measurements accordingly, based on the size of your hospital tank. I will say (as I didn't know this initially) it is best to fast your fish during the treatment process. This information is not included in the directions - I had to research and figure this out on my own. This way the medication can do its job effectively. Depending on the severity of your fish's illness - more than one treatment may be required. With time, patience, research specific to your fish, etc you will get your fish back to a healthy state in no time.
S**N
It works well in saltwater and freshwater saved all my fishes 5 star
It saved my freshwater and saltwater fishes and it safe for plants and corals if you add new fish or have sick fish I strongly recommend you to use this safe medication it says 7 days but I used more then 7 days till I see my fish healthy, and clean from spots
M**P
Easy to use and effective
Had what looked looked like a bacterial infection brought into the tank by a new fish. This product was easy to use, no temp increase needed, and no discoloration. Just made the water kind of foamy. Cleared things up in no time!
A**A
It seems to help
One of my fish had a really inflamed bump on its lip so I decided to buy this. I also changed the water 50% , then I used two teaspoons of this the next day and within the next 2 days his lip was pretty much healed. I don't know if it was just the water change,or this but it seemed to do its job ! The only weird thing is that one of my other fish died after using this but again I don't know if it was just a weird coincidence or the water change but overall it did help the fish in need
R**R
Great medication
Awesome product
V**Z
Saved my dying oscar
I used it to cure one of my oscar when they were still small and lost its tail. Because of this, it recovered and grew its tail back and stayed healthy. The bottle size is big enough for many uses. Price is affordable.
A**S
Saved my fish!
I got a poor little Betta fish from a chain pet store (probably my first mistake) and I was so excited because he was tri-colored and had a beautiful teal look to him! And he was what I was looking for 'red/white/blue' I was so excited! Well he got put into his new tank, and he didn't seem to be moving around much, even for a betta which I have owned in the past. I started taking a closer look at him about a month after I got him, and he looked to have fin rot. He had been biting his tail in the tiny cup which is hard to see in the photos... So I got this neat stuff because it's less than half of betta fix, is the same active ingredient, and has a higher concentration. Win, win, win. Started using it in his tank on a regular, adding one drop per gallon with an eye dropper and doing regular water changes. And would you know it, he started changing colors! Now I'm not saying that this stuff will make your fish morph like it did mine, but it will save them if you use it as instructed for what it is meant to be used for. What I didn't know at the time of buying him is that he had a SEVERE bacterial infection all over his face and sides. That white I thought was part of his color WAS HIM BEING EATEN ALIVE BY THIS BACTERIA. This medication is designed to get rid of that bacteria, which is what causes fin rot as well. After using it for about 3 months on a regular I had a completely different fish, literally. He was so much happier and looked even more vibrant and had much more energy to inspect and even flair at my camera and show of his beautiful colors. Long story short, if you use this, USE IT FOR WHAT ITS MEANT TO BE USED FOR AND YOU'LL GET GREAT RESULTS. I know I did. I still have little ATO to this day (I've had him for about two years now) and he now has an entourage of shrimp palls to keep him company. In the picture provided you can still see some of the bacteria on his face around his eyes, that's long gone at this point but I couldn't get a good picture for him from today. Little bugger keeps teasing me and then swimming away, ah well. These ones will be good enough.
M**N
Didnt heal my fish
I ordered this item thinking that it would heal my Betta fishes fin rot. Now, im not saying the product is bad by any means because it definitely prevented it from getting any worse. I would get this if your more trying to stabilize whatever your fish has going on. But it will NOT heal it. If your looking to actually heal a problem with your fish try KanaPlex. This picture shows my Betta Fishes tail after 14 days of MELAFIX (with 30% water change in between the 7 day mark following products instructions)
A**O
Parece que el tratamiento es efectivo, no soy veterinario y si mueren mis peces puede ser por otros agentes o causas. En cualquier caso tener este producto y aplicarlo a mis peces me da una tranquilidad
S**A
OrdinatO di nuovo
A**Z
fonctionne très bien, mon poisson rouge avait les yeux blancs, et ça l'a guérit
E**.
Been using this for my aquarium 👍🏼
C**N
livraison bien arrivée
Trustpilot
1 month ago
1 month ago