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Best Betta Fish Tanks: How to Choose an Aquarium for Your Betta

Betta Fish tanks

If you want to make sure that your Betta fish will live a long and happy life, you need to choose the best tank you can for his home. Aquariums come in all shapes and sizes and you have many options. Ultimately you want a Betta tank that is attractive, easy to maintain and healthy for your fish.

Unfortunately, it gets a little confusing when it comes to poor Betta fish. betta are anabantid, which means they can swallow air above the water if they have to. In the wild, this helps them survive for a short time in harsh, oxygen-deficient conditions and muddy, stagnant puddles.


Because of this ability to tolerate poor living conditions, people mistakenly think that Betta prefers tiny little tanks or bowls without filtration. Worse, people stick them in plant vases, bookends, "cubes" and other horrible enclosures.

If you were hoping to get such suggestions from this article, you have come to the wrong place. Betta doesn't belong in tiny little shells that you or I should be living in a closet. Like any other tropical fish, Bettas need space to thrive.

If you choose a larger tank, your Betta will be healthier. But there are also advantages for you. Larger tanks are easier to maintain. You spend less time walking around with the tank and changing water. And you have much more room to decorate, whether it's living plants or artificial sorsias.

In the end, choosing the right tank means a happier Betta fish and a happier you. This article will be on the right track to find the perfect home for your betta.

Best tank size for Betta Fish

Five gallons is the best tank size for Betta fish. There are many options for smaller tanks and other habitats, I really hope you avoid them. Smaller tanks get dirty far too quickly and do not provide enough room for your fish to swim around. Really, putting your betta in any tank smaller than five gallons is not a good idea. If you take something out of this article, I hope it's that lesson.

But I know I can say this until I turn blue and quit and people will still do it. So if you are still convinced that you can keep your Betta in a tank under 5 gallons, let me at least offer some advice:

You need to do full weekly water changes with a tank under five gallons. If you move to a larger tank with quality filtration, you can do partial water changes at less frequent intervals.
Betta may not like the bubbles or electricity generated by the air pump. You might feel better without them, and this is another important reason to avoid small tanks that rely on air pumps for so-called filtration.

Do not put any other fish or critter with your Betta fish in such a small tank. If you want tank mates for your Betta, you should consider a tank of at least ten gallons.
Do not rely on the air pump, which comes with many small tanks to work as a real filter. Instead, choose a tank with a decent in-tank filter or a hang-on-back filter or a tank that has the option of fitting an aftermarket nanofilter.
Don't choose a single-gallon tank or under, whatever else you decide.

Betta care advice from Fluval

Reasons for choosing a 5-gallon aquarium for Betta Fish

A 5 gallon tank is perfect for your Betta fish. It is small enough for a desktop or tabletop, but large enough to provide enough swimming space for a Betta.

There are some good reasons why bigger is better. Really, it all comes down to water quality and space. Not just room for your Betta to swim, although that is also important, but space to provide all the necessary elements for your fish to thrive.


Betta fish need heat and filtration like any other tropical fish, and this is very difficult to achieve in a tank under five gallons. There are nanofilters and heaters for tanks as small as 5 gallons, and these are a smart addition to your setup. By making sure these needs are met, your fish will be more resistant to disease, enjoy a better quality of life and probably live longer.


The amount of water itself plays a role in the general living conditions in your bed tank. All fish tanks accumulate pollution over time. When you think of a stream or lake, you can imagine how these waters have natural processes that ensure that waste is properly disposed of and water conditions are adequate for life to flourish. In a home aquarium, you must intervene on behalf of nature and ensure that these processes take place. This means cleaning your tank and changing water to dilute waste. The larger the tank, the easier it is to do.
Very small tanks get dirty quickly and the more water you can give your Betta the better. Remember, just because Betta has the evolutionary adaptations necessary to survive in bad conditions does not mean it is okay. It still needs clean water to thrive.
There are plenty of 5 gallon tank kits available, but when I recommend small tank kits for new aquarium owners, I usually refer them to the Fluvial Spec V. I like this tank for a few reasons.

First, it comes with everything you need, including good lighting and a real filter (not one of those wimpy under gravel filters you often find in small tanks). The only thing I would add is a nano heater, since the temperatures I live in are not suitable for tropical fish. I also like that the Spec V has a footprint that is a bit narrower than most 5 gallon tanks. This gives you a few more options for placement.

10-gallon Betta Tanks


A 10-gallon tank is the ultimate Betta setup and the best choice if you have the space. In a tank this big, you'll have plenty of room to decorate Betta's house and it will have enough room to swim.

A 10-gallon tank is a standard size in the aquarium industry, so you have much more choice when it comes to accessories. However, you can always choose to take the road less traveled and build a unique Betta tank that not only gives your fish everything they need, but also looks amazing.

Most importantly, a 10 gallon tank is able to establish itself as a small ecosystem, with healthy bacterial colonies in the filter and substrate that help break down waste. Remember, in a home aquarium you need to help nature dispose of waste, and a larger tank will give you the space to ensure that this is achieved.

This means a healthier tank, healthier Betta and much less work for you! Instead of weekly cleaning, you can learn to do simple water changes once or twice a month. This is less stress on your Betta because you don't have to remove it from the tank every seven days. It also means less stress on you and a more pleasant fish farming experience.

Don't think that a single Betta has to live in a tiny tank! A well planted or decorated 10 gallon tank with a single Betta in it looks fantastic!


If you need help finding a tank, I recommend you take a look at the Fluval Flex. I have had good experience with Fluval products, and there are a lot I like about this particular aquarium. For one thing, it has a unique design that really pops, especially compared to a standard, boring rectangular aquarium.

I like the way the filtration and lighting arrangement is included in the back of the aquarium, which makes things a bit neater and much more attractive. I also like that it is a bit bigger. This is actually a 12 gallon tank, so you have a little more space while still having a reasonable footprint.


Tank kits are very popular for good reason. They offer everything you need to assemble an aquarium in one package, minus the fish and the water of course. Fish tank kits come in sizes from under a gallon, up to 55 gallons. They are an easy and economical way to get into the aquarium hobby.

However, if you already know something about fish care, or if you are willing to do a little research, there is another way to build the perfect Betta tank. Many aquarium owners like to choose their own tank components rather than relying on a set.

Start with a simple glass or acrylic tank and hood, and from there choose your filter, heater and other accessories. This allows you to build a custom setup, with no restrictions around the aquarium kit manufacturer's design.

This is a smart and fun way to create exactly the kind of Betta Tank you want.

Your Betta es Home


Good luck choosing the perfect tank for your Betta fish. I hope you decide to give him at least a 5 gallon tank to make sure he has the best quality of life. No living creature should get stuck in a tiny tank for the rest of its life, especially not your great Betta Fish!

As you progress in your new hobby, take some time to learn more about the needs and care requirements of bed fish and fish farming in general. This is one of those hobbies where you can never really know everything, and the more you learn the better.

If you make some mistakes along the way, don't beat yourself up over them. It is important to approach fish keeping from a position of respect and appreciation for nature and to do your best as a caretaker of a living being.

Even a little Betta fish deserves your best effort, so make sure your Betta thrives in its new home!

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