Bettafix Review – Does it Work?

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Aquarium Pharmaceuticals BettaFix Remedy

Bettafix is a liquid medication manufactured by API (Aquarium Pharmaceuticals, Inc.), a company that produces a wide range of aquarium products and supplies.

Siamese fighting fish are susceptible to various tropical fish diseases, ranging from the common and easily treatable to the rare and deadly. When a betta gets sick, treating the illness as quickly as possible is important to ensure the best chance of a full recovery. API’s Bettafix is one of the most popular and well-known treatments for betta fish, but does it work?

In this article, we’ll take a closer look at Bettafix and determine whether it’s an effective treatment for betta fish diseases. We will also provide some tips on how to use Bettafix properly to maximize its effectiveness.

What is Bettafix?

Bettafix (Amazon, Petco, Chewy) is a liquid medication manufactured by API (Aquarium Pharmaceuticals, Inc.), a company that produces a wide range of aquarium products and supplies. It is classified as an antibacterial and antifungal fish medicine and effective against a broad range of bacteria and fish fungus.

Here are some examples of common diseases in betta fish that Bettafix can be used to treat:

  • Fin rot
  • Tail rot
  • Fungal infections (Mouth fungus, body fungus, etc.)
  • Wounds
  • Slimy patches on the skin or fins
  • Most injuries caused by handling, including ripped fins

It is important to note that Bettafix only treats external injuries, bacterial infections, and fungal infections. This is because it is formulated with Melaleuca as the main active ingredient, which is only effective against organisms on the surface of the fish. It will not treat internal infections or parasites, and is not recommended for use in pregnant bettas or fry (baby fish).

Note: Like most tea tree oils, Bettafix has a strong scent that some people find unpleasant. If you are sensitive to smells, it is recommended that you use another product or diluted Bettafix to avoid any irritation.

Pros and Cons of Bettafixpenetrate the skin

Now that we know what Bettafix is and what it’s used for, let’s take a look at some of the pros and cons of this popular fish medication.


  • Inexpensive
  • Widely available
  • Easy to use
  • Can be used to treat a variety of common betta diseases
  • Reputable manufacturer


  • Strong scent
  • Only effective against external infections
  • Not recommended for pregnant bettas or fry
  • May not be as effective as other medications
  • Dosage instructions have to be followed to a tee

This list of pros and cons may not be exhaustive, but it should give you a good idea of what to expect when using Bettafix. 

Things To Consider Before Buying Betta Medication

Having a sick betta fish can be very stressful, and it’s tempting to want to buy the first medication you see that claims to treat the illness. Unfortunately, this is rarely the best course of action. A carefully considered decision will usually result in more effective treatment and a quicker recovery for your fish.

Here are some things to keep in mind before buying any kind of fish medication:

Reputability of Manufacturer


If you think about it, fish medication is basically just chemicals that you’re putting into your tank. So, it’s important to make sure you’re buying from a reputable manufacturer that produces high-quality products. API is a well-known and respected company in the aquarium industry, so you can be confident that their products are safe and effective.

In assessing the reputability of a manufacturer, it is also important to consider the country of origin. Generally, products manufactured in the United States, Europe, or Japan will be of higher quality than those made in developing countries. This is because these countries have more stringent regulations surrounding the manufacture of fish products.

Be that as it may, having a proper understanding of the ingredients used in medication is more important than the country of origin. So, even if a product is made in a developing country, it could still be effective if it contains the right ingredients.

Severity of Illness

Bettas are naturally aggressive fish and often start fights with other fish even when they’re not feeling well. As a result, many bettas end up sustaining injuries during these altercations. Bettafix is an effective treatment for these kinds of injuries and other external infections and illnesses. However, it shouldn’t be seen as the be-all-end-all of fish medication.

Betta fish mating

Depending on the severity of your fish’s symptoms, getting a more powerful medication or taking your fish to the vet might be necessary. If your betta is lethargic, not eating, has lost a significant amount of weight, or has any other serious symptoms, it is best to consult a veterinarian specializing in treating fish.

Fish remedies at your local pet store are not always the most effective. In more severe cases, specialized fish medicine from your veterinarian will be necessary to properly treat your betta.

Side Effects

Every medication has the potential for side effects, and fish medication is no different. For instance, the most common side effect of Bettafix is human skin irritation. If you get this medication on your skin, it is important to wash it off immediately because it can cause redness, itchiness, and swelling. Plus, if you are sensitive or allergic to tea tree oil, you could experience more severe reactions.

The severity of side effects in different types of fish medication can vary widely. So, you must read the label carefully and follow the instructions to avoid any problems. Some substances may even be carcinogenic or especially toxic to invertebrates, so it is important to exercise caution when using them.

side effects

Bettafix is a relatively safe and effective medication, but it is still important to use it as directed to avoid any problems. If you overdose or use the medication for too long, your fish could experience negative side effects such as lethargy, appetite loss, and increased light sensitivity.

Types of Fish

Last but not least, it is important to consider the type of fish you are treating before using any medication. This is because different fish have different sensitivities to chemicals. Bettafix can be used to treat bettas and most tropical fish breeds because they are relatively tolerant of chemicals.

However, Bettafix is not recommended for goldfish or koi because they are much more sensitive to chemicals. If you use this medication on these types of fish, they will likely experience negative side effects. Other types of fish that are sensitive to chemicals include African cichlids, electric blue jack dempseys, and discus fish.

Generally speaking, Bettafix will not harm most types of fish. However, you should always do your due diligence and research the type of fish you are treating before using any medication to be safe.

How Do You Use API Bettafix?

If you’ve decided that API Bettafix is the right medication for your betta fish, the next step is to learn how to use it properly. Before delving into dosages and instructions, you should first remove all afflicted fish from a larger aquarium and place them in a hospital tank. This is because Bettafix will kill both good and bad bacteria in the aquarium, which can lead to an ammonia spike and further stress the fish.

This hospital tank should contain at least one gallon of water and have a filter and heater to maintain a stable environment. The water should also be treated with a de-chlorinator before adding the sick betta fish. Once the hospital tank is set up, you can begin treating the fish. Here are the instructions for using API Bettafix:

  1. Shake the bottle of Bettafix well before each use.
  2. Add half a teaspoon (2.5ml) of Bettafix per gallon of hospital tank water.
  3. Reintroduce the same dose of Bettafix daily for up to 7 days
  4. Conduct a partial water change
  5. Repeat steps 2-4 until the fish has recovered

As always, it is important to consult a veterinarian if you are unsure how to treat your fish or if the Bettafix does not seem to be working.

Bettafix Reviews – Features & Benefits

Before we wrap up this API Bettafix review, let’s take a look at some of the features and benefits of this product:

Safe For Plants and Invertebrates

One of the key concerns people have when medicating their aquarium is whether or not the medication will harm their plants or invertebrates. Many types of medications will kill fish, plants, and invertebrates, but Bettafix is safe for all three. This makes it an ideal choice for people who want to treat their fish without harming their other aquatic creatures.

Bettafix is safe for plants and invertebrates while other medications are not, because it only targets fish. The main active ingredient in Bettafix, Melaleuca, is only effective against the external surfaces of fish. It acts as an antibacterial and antifungal agent, but does not penetrate the skin or scales to reach the internal organs.

This means that Bettafix will not harm plants or invertebrates, but can still be used to effectively treat fish. Be that as it may, we still recommend using a hospital tank with no plants or invertebrates to be safe.

Treats a Wide Range of Infections

Bettafix is effective against a wide range of infections, including bacterial infections, fungal infections, and rips or tears in the fins. It can also be used to treat minor wounds and abrasions. This makes it a versatile medication that can be used for many different purposes.

many betta fish with black background

The main active ingredient in Bettafix, Melaleuca, is a powerful antibacterial and antifungal agent. It is effective against a wide range of bacteria, including Streptococcus, Pseudomonas, and Aeromonas. It is also effective against common fungal infections, such as fin rot and columnaris(Cotton Wool).

In addition to being an effective treatment for infections, Bettafix can also be used to treat minor cuts and scrapes. Melaleuca’s antibacterial and antifungal properties help prevent infections in wounds, while the soothing agent helps reduce inflammation.

Easy to Use

Another great thing about Bettafix is that it is very easy to use. The medication comes in a liquid form that can be easily measured and added to the water. There is no need to mix it with anything or worry about getting the dosage wrong.

The instructions for using Bettafix are very straightforward. You simply add half a teaspoon (2.5ml) of Bettafix per gallon of hospital tank water. The medication can be added directly to the water or added to a cup of water and then poured into the tank.

Once the Bettafix has been added to the water, it will begin to work immediately. The medication will remain active in the water for up to 24 hours, so removing it is unnecessary after each treatment. You will need to reintroduce the same dose of Bettafix daily for up to 7 days, after which you can conduct a partial water change.


cost switch

Last but not least, Bettafix is an affordable medication. A 1.7-ounce bottle of Bettafix costs around $6, which is enough to treat up to 20 gallons of water. Nobody likes to take budgetary shortcuts when it comes to the health of their fish, but Bettafix provides a cost-effective way to treat your fish without breaking the bank.

Opting for a cost-effective medication like Bettafix does not mean that you are sacrificing quality or effectiveness. Bettafix is a high-quality medication that is manufactured in the United States. It is also FDA Approved, which is a testament to its safety and efficacy.

Additionally, Bettafix is very easy to find. It is widely available online and in pet stores. Because it has such a large market share, you are more likely to find information and anecdotals on its effectiveness.

The Bottom Line

Overall, we were very impressed with Bettafix. It is a safe, effective, and affordable medication that can be used to treat a wide range of infections. It is also very easy to use, which makes it a great choice for beginner aquarists. The versatility of Bettafix makes it a great addition to any fish keeper’s medicine cabinet.

One thing to note is that Bettafix is not a cure-all. It will not work on every infection and is ineffective against viruses. If your fish is sick, it is always best to consult a veterinarian. However, Bettafix is a great way to treat common infections and minor injuries. Betta fish are especially susceptible to infections, so Bettafix is an essential medication for any Betta owner.

We would highly recommend Bettafix to anyone looking for a safe, effective, and affordable medication. It is a great choice for beginner and experienced fishkeepers alike. Bettafix will quickly become a staple in your fish care arsenal.

Have you used Bettafix before? What was your experience? Let us know in the comments below!

Aquarium Pharmaceuticals BettaFix Remedy

API's Bettafix is widely used and can be found in virtually every pet store. But does it actually work? Read on and learn everything you need to know!

Product Brand: Aquarium Pharmaceuticals BettaFix Remedy

Product In-Stock: InStock

Editor's Rating:

Wanda is a second-generation aquarist from the sunny tropics of Malaysia. She has been helping her father with his freshwater tanks since she was a toddler, and has fallen in love with the hobby ever since. A perpetual nomad, Wanda does her best to integrate fish-keeping with her lifestyle, and has taken care of fish in three different continents. She loves how it provides a nice break from the hustle and bustle of life.

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