The best tanks for Betta fish

If you’re in a hurry and eager to find out the best fish tank for betta fish. Then we would recommend the Fluval Spec V Aquarium Kit, 5-Gallon.

Betta Fish, also known as the Siamese fighting fish, are very popular among fish lovers and fish enthusiasts, and we guess that is why you are reading this article! Therefore, their health and happiness will depend on your care and treatment. We have searched high and low to understand what the best tanks for Betta Fish are, which we hope will enable you to make an informed decision quickly. If you’re still with us, before you start the review – please see this fun video and learn about the Betta fish life cycle.

Does Size Matter?

Can Betta fish survive in small spaces, i.e., anything less than 5 gallons, the answer is yes. However, if you plan on putting your fish in something less than 2.5 gallons, we would consider that unwelcoming for any fish, let alone Betta. If you want your Betta fish to thrive, then having a bigger tank will provide a better environment and habitat for your fish. 

Putting the academic hat on, Betta fish, who have the formal name Betta Splendens, are a member of the gourami family and can be found in Asia (countries include Thailand, Cambodia, Vietnam et al). Their reputation to exist in small spaces can be attributed to the fact that they thrive and can be found in rice paddies, floodplains, and standing waters of canals. For those of you who want to dive deeper into their history, please read here. Check out the video below, where you can see Betta fish in their natural environment, start 4 minutes in!

Your fish appreciate cleanliness!

It’s a common misconception that Betta fish don’t need a filter, while in a tank. This originates from the fact that they often live in small, unclear, and oxygen-poor environments in the wild. In addition to this, Betta fish have the unique biological apparatus within their armory of tools called a Labyrinth Organ, which enables them to breathe above the water and have standard gills as well. However, the evidence is clear, that having a filtered tank, while looking after your Betta fish is critically important to their success. Added to this, you must also change the water in your tank, in order to ensure the happiness of your Betta’s, please see our article here on water changes, the frequency required and why they are important.

Why has my head gone numb?

A little bit of tongue and cheek, by quoting a line from my favorite cult film Withnail & I, as he lathers himself in DP (deep heat cream) to stay warm. Bringing it back to the present, having an optimal environment, including temperature for your Betta fish, is vital. This sits between 76° and 84° F (25° and 29° C) and can be achieved by having a tank heater, if you want more information on heaters, please continue here.

So to sum up the above, size is important for the health and sanity of your fish. Keeping the environment clean enables your fish to thrive. Temperature is also a significant concern that must be factored in.

Before we reveal our reviews, please see below a fun clip on the different types of Bettas.

needyfish’s 5 favorite tanks for Betta fish

Below are 5 tanks for Betta fish which we believe are the best. Check out the pros and cons, which we hope will help with your final decision. 

1. Fluval Spec V Aquarium Kit, 5-Gallon

Key Features

  • Size – 5 Gallons
  • LED lighting system
  • Filtration – 3 Stage filtration (hidden out of view)
  • Etched glass aquarium with aluminum trim 
  • Includes foam block, activated carbon and BioMax bio rings

In our opinion and from the reviews, Fluval is one of the elite providers for fish tanks. If you’re looking for a bigger space compared to the Fluval 2.6 gallon review below, this is a fantastic choice. However, several users reported strong flow rates with the included filter which could make an unpleasant environment for your Bettas. To remedy this we would recommend buying the Fluval EDGE pre-filter sponge as well which will help calm the water jet right down.


  • Quickly assembled
  • Honeycomb design conceals back filtration area while looking ultra-modern


  • Flow can be strong for Bettas, but can be adjusted
  • No room in the filtration area to fit a heater

2. MarineLand 5 Gallon Portrait Glass LED Aquarium Kit

Key Features

  • Size – 5 Gallon 
  • Filtration – 3 Stage filtration (hidden out of view)
  • Lighting – LED Lighting (light emitting diode)
  • Rite-Size Z Cartridge
  • Marineland Bio-Foam

The clear benefit of this tank is value for money. The size, silent motor, and adjustable filter make it a perfect home for your Bettas. However, it’s worth noting several users commented on the water current whilst on the medium setting being too strong for Bettas. They were, however, impressed with the pump’s adjustable features and a lower setting saw their fish thrive. The blue and white lights will help simulate natural lighting. Additionally, the contoured glass corners and black background make it easy to view your Bettas. 


  • Adjustable flow filter pump
  • Filter motor is silent


  • Filter can create a strong current for Bettas, this can be modified
  • Plastic filter for cover is weak
  • Three outlets required for tank, light and heater

3. Aqueon 10 Gallon Fish Tank Aquarium

Key Features

  • Size – 10 Gallons
  • Filtration – Aqueon Quietflow LED Pro Filter and medium cartridge
  • Lighting – blue LED lighting (light-emitting diode)
  • Comes with: black background, multi-colored gravel, three plants, fish food and water conditioner

Out of the 5 reviews, this is the easiest to set up, perfect for that first-time fish owner. With a quiet filter and beautiful blue LED light, it looks fantastic at night. One clear disadvantage is it lacks a feeding door for your fish, which means you have to remove the hood. Several users also experienced issues with the cover at the back of the tank. However, all things considering with the added extras included this represents excellent value for money.


  • Very easy to set up
  • Quiet filter
  • Available in three colors: lime green, pink and orange


  • Only one light setting
  • Plastic hood lacks a feeding door

4.  Fluval Spec III Aquarium Kit, 2.6-Gallon

Key Features

  • Size – 2.6 Gallons
  • Filtration – 3-stage oversized mechanical, chemical and biological filtration
  • Lighting – 31 LED lighting system
  • Etched-glass tank with aluminum trim
  • Includes foam block, activated carbon and BioMax bio rings

This is the smallest tank we are reviewing, and out of the 5, it has the most modern design and clean look, with the filtration system and pump, completely concealed to the naked eye. Overall, users were impressed with the quality of this tank; however, due to the size found, finding appropriate seized ornaments tricky. 


  • Filtration area is concealed and hidden
  • Contemporary/modern design


  • No heater

5. Tetra GloFish 3 Gallon Aquarium Kit Fish Tank 

Key Features

  • Size – 3 Gallons
  • Filtration – Tetra 3i filter 
  • Lighting – One LED light (light emitting diode)
  • Whisper(R) power filter
  • Tetra Whisper Bio- bag small cartridge

For first time buyers, looking to buy a betta tank on a shoestring, you should consider this tank. It’s straightforward to set up and use and would be a great starter home for your Bettas. However, several users were dissatisfied with the filter which included reviews of it to being temperamental. So we would recommend buying a separate one and use the one included as back up.  


  • Easy to set up
  • Pedestal base
  • Low voltage power adapter


  • Poor filter
  • No heater

Our choice

So that brings us to the end of our article, and we hope you have, at the very least, come away with more information and greater clarity on what tank you could consider for your Betta fish. There is no science to picking a tank, a lot comes down to what you feel comfortable with, both from a design and cost perspective. However, if we were going to choose out of the 5 reviews taking into account price, efficiency, and quality. We would recommend the  Fluval Spec V Aquarium Kit, 5-Gallon. It’s modern, easy to set up, and will be a very stylish home for your Bettas. 

Remember that for your Betta’s to thrive; they need love and a healthy environment, so whichever tank you choose out of the 5 reviewed; you will have the ideal home for them! 

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