Top Rated Betta Aquarium for 2021 – A Comprehensive Comparison
If you are looking to buy the best betta aquarium to host your favorite fish but have little time to sift through dozens of reviews, then you’ve come to the right place. After carefully studying each and every product in this line, comparing quality and features, Dr. Fox has come to the conclusion that the Fluval Spec III Aquarium Kit provides the best bang for the buck. It has a sleek design made from durable materials, an attractive LED lighting systems as well as other nifty features you’ll appreciate. In case the Fluval Spec III Aquarium Kit is out of stock, you might want to check out our runner-up – the Tetra LED Half Moon aquarium.
Comparison table
Our Top Choice

This model features high-grade etched-glass and a robust design reinforced with an aluminum trim. This means it’s both durable and as lightweight as possible. Moreover, the 31 LED installation ensures a real light show and atmosphere for any interior space.
Although this tank comes with numerous features, the instructions included are not very clear, so you might need to do some online research yourself to set it up.
Besides the elegant design, the 3-step filtration system definitely comes in handy, making this an excellent choice for your fish.
2nd Best
With the 29049 model, you’ll get both a comfortable home for your fish (or other pets), as well as a stylish addition to your home. The total capacity of 1.1 gallons makes this model not the largest but comfortable for smaller fish. The 4 LED lights can be positioned either above or underneath.
Given that in this tank you can only have a small eco-system, you’ll need to change the water rather often, so be aware. Otherwise, the health of your fish might decline.
This small and handy tank is the right choice if you want to dedicate a small place in your home for your fish, without too much hassle.
Also To Consider
One of the most appreciated models in the betta aquarium reviews, the 29095 comes with a sturdy construction and a lid made of resistant plastic that is also anti-scratch. The 3-gallon capacity means that it can accommodate one or more betta fish, while the LED light ensures the illumination.
According to some reviews, the filter that comes with this tank is not the most aesthetically pleasing one and is also rather loud, so you might need to invest in a new one.
With a sturdy construction and a separate plug for the filter and light, this tank might be what you are looking for as your next purchase.
5 Best Aquariums for Bettas (Reviews) in 2021
1. Fluval Spec III Aquarium Kit
This aquarium is made of high-grade etched-glass with a robust design that is reinforced with an aluminum trim that’s both lightweight and durable. The powerful 31 LED installation will provide your home with a spectacle of light and create a pleasant atmosphere while also making your beautiful fish stand out.
The tank can hold 2.6 gallons of water, which is more than what one or two little betta fish will ever need. This aquarium is also compact, and its small size will allow you to position it almost anywhere, whether you prefer to have it on a desktop, a countertop or on a shelf.
The Fluval Spec III Aquarium also comes with an effective circulation pump with an output nozzle you can adjust, a 3-step filtration system as well as filter media such as a handy porous foam block, BioMax bio rings as well as activated carbon that will ensure an efficient chemical, mechanical and biological water filtration to keep your fish healthy.
Buy from Amazon.com for ($79.99)
2. Tetra LED Half Moon Betta Aquarium
This stylish aquarium can be a great addition to your home and can provide shelter for your favorite fish. The total capacity is 1.1 gallons, which should more than suffice a small fish such as a betta. With its 4 LED lamp that can be positioned both underneath as well as above, this aquarium will have the perfect lighting to bring out the best of the fish as well as the decor.
Thanks to its small size, the Tetra LED Half Moon will fit anywhere and complement your home. Place it on a small shelf, in the living room or on the desktop where you work or just about anywhere else you like.
You can feed your fish and ensure it stays healthy and happy through the convenient feeding hole on the lid, without having to get your hands wet. Maintenance should also be easy – remove the lid and clean the interior – just remember to use only water as detergents, and other cleaning solutions might harm your fish.
Buy from Amazon.com
3. Tetra 29095 Cube Aquarium Kit
The Tetra Cube is quite appreciated in betta aquarium reviews. It comes with a durable body and lid made of resistant and anti-scratch plastic that will last even after prolonged use. With a 3-gallon capacity, this aquarium will be more than comfortable for one or more betta fish, while the LED light, which also comes with a low-voltage power adapter, will ensure that visitors and family members alike will be impressed by its elegant illumination.
Measuring 10.5 x 10 x 10 inches, the compact Tetra Cube Aquarium will fit anywhere while also enriching the atmosphere and decor of your home. The convenient feeding hole will make feeding your fish a breeze as well as allow you to easily clean the interior.
The modern 3i filtration system comes with a Whisper(R) Power Filter and a Tetra(R) Whisper Bio-Bag Small Cartridge, ensuring that the water will stay clean and clear and protect your fish from pollutants or foreign particles.
Buy from Amazon.com for ($38.99)
4. Marineland Contour Glass Aquarium Kit with Rail Light
The Marineland Contour is a stylish aquarium that is made from high-quality glass. Owing to its name, it is made of curved glass to create an elegant contour that won’t just look great, but the natural curves will also reflect light at the best angles. Not only that, but this aquarium also comes with an LED lighting system that combines white and blue light to provide the best possible lighting both day and night.
With a capacity of up to 3 gallons, this tank will provide your fish with plenty of space to swim and rest, while the easy-to-use sliding glass canopy will provide you with convenient access to feed your fish or clean the interior.
The advanced 3-stage filtration system comes with an adjustable filter pump that will provide your fish with a clean and healthy medium. Thanks to its filter cartridge floss, activated carbon filter and Bio-foam, this 3-way system will ensure efficient mechanical, chemical and biological filtration.
Buy from Amazon.com for ($61.19)
5. Penn Plax Vertex Aquarium Kit for Fish with Filter
The Penn Plax Vertex aquarium is made of bent glass, with a frameless design which will ensure that no matter which direction you look from, you will have a great view of the entire tank. With the ability to hold up to 2.7 gallons, this aquarium will surely be large enough for any small bettas, yet small and compact enough to fit on a cabinet, a shelf or even on your working desktop.
The hinged lid is easy to open and close and will make for easy access to feed the fish or clean the inside. You can adjust the flow of the hang-on water filter to ensure that the water stays clean and free of debris. Thanks to the included thermometer, you can maintain water at optimum temperatures so that your fish and plants can thrive. This aquarium is also suited to shrimp, so you can diversify your little aquatic world if you wish.
Click to see the price on Amazon!
Our Comprehensive Buying Guide
When deciding on which is the best aquarium for betta, there are several aspects you need to weigh in. If you’d rather not get into exhaustive guides that could take hours to go through, not to mention the amount of time required to read dozens of reviews, then here is a short guide we have compiled especially for you so that you don’t have to spend extra time and effort in order to get the information you need to make the right choice.
Glass or plastic?
When it comes to a good fish tank for betta, you have a choice between glass and plastic. Both materials come with pros and cons. Glass is more resistant to scratching and is easier to clean, but could dent or crack if you’re not careful. Plastic, on the other hand, might scratch easier and be a bit trickier to clean, but you won’t have to worry about breaking it.
Glass is also a lot heavier than plastic, so if you plan on moving the aquarium a lot, then the latter might be better suited. When it comes to viewing angles, plastic might create fewer distortions, while glass will provide a much clearer view.
Capacity to suit the fish species
You also need to take the size and capacity of the tank into consideration. Do you want a small aquarium for a small betta that you will be able to keep on your desk, or a large tank to have plenty of room for a few fish and some plants? These aquariums normally have capacities between 1 and 3 gallons, although you can find larger ones if you think you need the extra space.
Lighting, filters and other options
Finding the best aquarium also requires balancing design and functionality. Do you want it to look very good and have several lighting modes for both night and day, or would you rather pay an extra dollar to have the latest filtering systems to ensure that the water stays crystal clear and the fish healthy? There are also many other features to think about, such as thermometers, extra filters for mechanical, biological and chemical filtering, and more.
Get the best bang for your buck
With all of the above in mind, you also want to consider your budget. Do you want a small and simple tank, or can afford the most expensive aquarium for sale and are willing to pay for all the extra features? Regardless of the price paid, what matters most at the end of the day is that you are satisfied with your purchase and that both you and your fish are happy.