10 Best Betta Fish Tank Sizes [2025]
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Choosing the best betta fish tank sizes can be challenging, especially with the myriad of options available on the market today. It’s easy to feel overwhelmed when trying to determine the right fit for your aquatic companion’s needs. To simplify this process, we meticulously shortlisted 10 of the best products based on quality, size, and user reviews, ensuring that our recommendations cater to a range of preferences and requirements. This carefully curated list will save you time and hassle, allowing you to focus on providing the best environment for your betta fish.
Top 10 Betta Fish Tank Sizes In The Market
Betta Fish Tank Sizes Review
- Easy to Maintain: The water filtration system reduces the frequency of water changes, which makes it a good choice for aquarium beginners or starters to keep a single Betta, a couple of shrimp, snails, or a small goldfish. Dimension：8”x5.25”x7”(LxWxH)
- Built-in Light: LED hood provides ample light for the tank making your fish glow brighter and the decorations stand out.
- Compact Size: The tank is lightweight, cute and small and it doesn't take up too much space on the desktop or a kitchen counter. (Note: If the current is a bit strong, you can put a pre-filter sponge filter on the intake to reduce the water flow.)
- Complete Starter Kit: 1x 1.2 gallon Fish tank, 1x Sponge, 1x Water Filter, 1x 5V USB Power Cord, 2x Artificial Plants
- Note: No USB power adapter included, the tank needs a power adapter rated ≥ 5V/ 2A. Make sure the adapter you use is powerful enough. Insufficient power of the adapter may cause the light or the pump not working. If the pump stops working or the water flow decreases, it is time to remove the pump, clean it thoroughly, and then properly reinstall the impeller and shaft assembly to restore normal operation. And the pump need to be FULLY SUBMERGED UNDER WATER to work.
- AQUARIUM KIT: Clear plastic, half moon-shaped front allows unobstructed viewing.
- MOVABLE LIGHT: LED light can be positioned to light tank from above or below – requires 3 AA batteries (not included).
- IDEAL FOR BETTAS: Bettas have large, heavy fins that weigh them down, so they do not need a lot of space; bettas require minimal maintenance and make a great species for beginners.
- CONVENIENT: Clear canopy has a hole to make feeding fish easy.
- 1.1 GALLON TANK: Small size that’s perfect for a desktop or in any room (9 inches x 10.5 inches x 4.5 inches).
- THERE’S ROOM FOR TWO: The Double Betta Bowfront Tank Kit offers a safe and convenient way to house up to 2 Bettas in a single aquarium. This plastic tank features a removeable, double-sided divider with built-in slits for even water flow. You can remove the divider completely, giving more space to a single Betta.
- SHOWCASE THOSE BEAUTIFUL COLORS: While keeping your Bettas safely separated, the double-sided divider is both opaque and see-though. If you wish to keep your fish from seeing one another, keep both sides of the wall down. If you wish to see some vibrant displays and flares from your Bettas, lift and remove the colored side of the partition.
- UNIQUE FEATURES: Our double chamber Betta Bowfront Tank Kits come with waste absorbing Pro-V Crystals, a filter grid, and 2 plastic plants. They also feature a water release cap on the very bottom at the tank, which makes water changes that much easier. With a slight pinch, the E-Z Lift Lid gives you easy and instant access.
- HELPFUL INSTRUCTIONS: 1) Wash all components with warm water only, and then spot dry with a clean towel or rag. 2) Place filter grid, waste adsorbing crystals, and plastic plants in tank, then fill with dechlorinated water. 3) Approximately once a week or as needed, drain about 20 percent of water by opening the water release cap, then fill with dechlorinated water.
- MEASUREMENTS: Overall = 7.75 (W) x 3.5 (D) x 6 (H) / Each Chamber when Divided = 3.75 (W) x 3.5 (D) x 4.5 (H)
- Mini Size: The heater is only 4.5” in length making it a great choice for small sized tanks from 3 to 5.5 gallons without taking up much space and obscuring the viewing area.
- Easy to Use: The small 25W aquarium heater is preset to 78°F which is a perfect temp for Betta and most of other tropical fishes, and no extra setup needed just plug and play.
- Easy to Check: The indicator light turns red when it is heating and it turns green when it is resting so it is easier to do a quick check every day.
- Includes: 1x 25W Small Aquarium Heater, 1x Suction Cup, 1x Free Thermometer Strip
- Cautions: Always keep it fully submerged under water before plugged in, and unplug it and wait for at least 10 min before you do aquarium maintenance or take it out of water.
- ONLY COMPATIBLE with USA AQUEON tank size 20.25”x10.5”x12.6”. This WILL NOT FIT ANY other brand of 10 gallon tank. PLEASE check tank size before buying.
- Easy to install and maintain - No Suction Cups Required. An installation video link is provided on the instruction sheet.
- Made from a solid sturdy non toxic material.
- Adjustable sidebars. Slide the side bars OUT against the glass to remove gaps and slide up to fit under the rim.
- NOT suitable for reptile tanks unless siliconed in place. NOT suitable for separating shrimp, they will get through the holes. NOT suitable for bare bottom tanks. Substrate is needed.
- Easy to Maintain: The water filtration system reduces the frequency of water changes, which makes it a good choice for aquarium beginners or starters to keep a single Betta, a couple shrimp, snails, or a small goldfish. Dimension： 8”x5.25”x7”(LxWxH)
- Built-in Light: LED hood provides ample light for the tank making your fish glow brighter and the decorations stand out.
- Compact Size: The tank is lightweight, cute and small so it doesn't take up too much space on the desktop or a kitchen counter. (Note: If the current is a bit strong, you can put a pre-filter sponge filter on the intake to reduce the water flow.)
- Complete starter kit: 1x 1.2 gallon Fish tank, 1x Sponge, 1x Water Filter, 1x 5V USB Power Cord, 2x Artificial Plants The filter MUST be fully submersed under water.
- Note: No USB power adapter included, the tank needs a power adapter rated ≥ 5V/ 2A. Make sure the adapter you use is powerful enough. Insufficient power of the adapter may cause the light or the pump not working. If the pump stops working or the water flow decreases, it is time to remove the pump, clean it thoroughly, and then properly reinstall the impeller and shaft assembly to restore normal operation. And the pump need to be FULLY SUBMERGED UNDER WATER to work.
- Starter Aquarium: Small size of the cube aquarium can be used as a feeding box for tiny aquatic animals such as shrimp and small fish, and can also be used as a viewing box for seaweed and moss balls. The transparent design provides a clear view and complements home decor, and is more pleasing to the eye when stacked, helping to develop children's observation and curiosity
- Block Type Decorative Fish Tank: This is a cute little fish tank with 6 protruding columns at the top, which can be stacked with the same fish tank of different colors to mold multiple fish tanks into different shapes to decorate your table and walls
- Easy to Use: The set-up is easy and direct. Hold the transparent inner tank with one hand, hold the outer frame with the other hand and pull in the opposite direction to open the fish tank. The surface of the fish tank is smooth and burr-free, safe for both people and fish
- Acrylic Material: Unlike thin plastic, acrylic material is stronger and more durable, even if it falls, it is not easy to deform and break. The inner tank and frame can be separated, easy to clean, no need to worry about the fish jumping out
- Fun Gift Choice: Give it to your kids, friends, colleagues and family at holiday or birthday parties. The fish tank currently on display measures 16 cm (6.29 inches) long, 10.5 cm (4.13 inches) wide, and 13.5 cm (5.31 inches) high. It can be used as a temporary tank while cleaning the aquarium or traveling on a camping trip
- TETRA WATER CLEANER: Gravel siphon used to easily clean aquariums.
- COMPATIBLE AQUARIUM SIZE: For aquariums up to 55 gallons.
- MAKES MONTHLY WATER CHANGES EASY: It only takes 30 minutes to replace 30% of water every 30 days.
- REMOVE DEBRIS: Siphons are a great way to easily remove debris from gravel by moving the water cleaner throughout the gravel.
- INCLUDED: Tetra Water Cleaner comes with gravel siphon, priming bulb and clip for bucket for a simple set up.
- Vivid Aquatic Plant Decoration: Once it's in the tank, the plants will swing with the water, and you can't even see that it's made of plastic; It is great for aquarium decoration
- Size: The height of aquarium plants are 4 inch and 2 inch
- Low maintenance: It is easy to clean, and stable in water; Please soak the aquarium plants in warm water for 2~3 minutes to remove peculiar smell before using it; It will become more beautiful
- Premium Material: Aquarium plastic plant is made of soft and healthy materials, there will be no discoloration and safe to water and fish; Each plant has its own ceramic base, which is heavy and firm, so those plants will not float around in the aquarium
- Includes: You can get 2pcs betta aquarium plants and 2pcs small size soft plants
- 【DaToo 1.6 Gallon Fish Tank】: Do you want to create your own little aquarium world? The DaToo 1.6 Gallon Fish Tank is the perfect choice for you to explore the world of aquariums! It not only allows us to immerse ourselves in nature, but also relieves the stress of life and makes us happy both physically and mentally. This DaToo aquarium is carefully crafted to provide you with everything you need to start this amazing aquarium journey full of surprises and fun at the touch of a button!
- 【Ultra-clear Visual Experience】: The meticulously crafted DaToo Fish Tank is made of highly transparent and smooth Ultra HD GGPS plastic to experience 360° Ultra HD immersive viewing, which is lightweight, solid and safe, with excellent strength and abrasion resistance. With a light transmission rate of 91.5%, it is 1.5 times clearer than ordinary plastic. You can't even feel the wall of the aquarium, the fish feel like they are swimming in the air, it's amazing!
- 【Perfect Lighting System】: DaToo 1.6 Gal Aquarium Starter Kit prepares you with a lighting system consisting of 12 high brightness 3528 LED beads that mimic natural light, providing plenty of soft light for the fish tank. And it's waterproof and non-strobe to keep fish and other aquatic creatures comfortable and help create a natural ecological environment. Simply flick the switch on the top of the tank and immediately create a beautiful, healthy and safe underwater world for you.
- 【Powerful Quadruple Filtration】: The DaToo aquarium filtration system provides you with a quadruple filtration effect of 1*Biological, 2*Physical and 1*Chemical filtration, which easily cultivates beneficial small organisms, ensures clear and healthy water, and reduces the frequency of water changes. The internal 3W 80GPH water pump easily drives the water to self-circulate and runs at less than 35 decibels, creating a soothing atmosphere and visual waterfall experience.
- 【Thoughtful Details Design & Quality After-sales】: Flip top feeding port and removable top cover make feeding and cleaning more convenient, the fish tank is small and cute, won't take up too much space for you. Easy to install and durable. Beautifully boxed for you, perfect gift for your family, kids and friends. If you have any questions, please feel free to contact DaToo, customer satisfaction is our constant pursuit.
Our Review Process
To ensure you get reliable product recommendations, we follow a detailed review methodology that includes:
- Market Research: Scanning best-selling and trending products in this category.
- User Feedback: Reviewing customer reviews, star ratings, and complaints.
- Hands-On Testing: Trying select products ourselves when feasible.
- Feature Comparison: Evaluating specs, durability, pricing, and safety.
- Expert Opinions: Consulting with niche experts or credible reviewers.
We independently select the top 10 options based on value, quality, and usability. To learn more, visit our detailed review process.
Key Considerations Before Buying a Betta Fish Tank
1. Size of the Tank
When selecting a tank for your Betta fish, size is one of the most critical factors. Bettas thrive in a minimum of 5 gallons of water. While smaller tanks can be tempting due to their lower cost and space requirements, they can lead to poor water quality, which can stress your fish and lead to health problems.
2. Shape and Design
The shape of the tank can also impact your Betta’s well-being. Tall and narrow tanks might look appealing, but they provide less swimming space compared to wider, more rectangular tanks. Bettas are active swimmers and need room to explore their environment. Additionally, the tank design should include hiding spots and plants to mimic their natural habitat.
3. Filtration System
A good filtration system is essential for maintaining water quality. Bettas are sensitive to changes in their environment, so a filter that creates minimal water current is preferable. Look for a filter with adjustable flow settings, as Bettas prefer calm waters. Regular water changes will still be necessary, but a good filter can help reduce the frequency.
4. Heating Requirements
Bettas prefer warm water temperatures between 76°F and 82°F. Depending on your local climate, you may need to invest in a reliable heater to maintain the proper temperature in the tank. Make sure to choose a heater that is appropriate for the size of your tank and has a thermostat to prevent overheating.
5. Maintenance Ease
Consider how easy the tank will be to clean and maintain. A larger tank with a good filter may require less frequent cleaning than a smaller one. Look for tanks with removable lids and easy access for siphoning water or cleaning the substrate. Also, consider how easy it is to add decorations or plants without disturbing the tank’s ecosystem.
6. Compatibility with Other Fish
If you plan on keeping other fish in the same tank, it’s crucial to choose the right species. Bettas can be aggressive, particularly towards other males and certain brightly colored fish. Research compatible species and ensure that your tank is large enough to accommodate multiple inhabitants without causing stress or territorial disputes.
7. Budget
Lastly, consider your budget. While it might be tempting to opt for a cheaper tank, remember that investing in a larger, higher-quality tank will benefit your Betta in the long run. Factor in the costs of a heater, filter, substrate, decorations, and ongoing maintenance when calculating your budget.
FAQs
What is the minimum tank size for a Betta fish?
The minimum recommended tank size for a Betta fish is 5 gallons. While they can survive in smaller containers, larger tanks provide better water quality and a more stable environment, which is crucial for their health and well-being.
Can Betta fish live in a 1-gallon tank?
While Betta fish can technically survive in a 1-gallon tank, it is not ideal for their health. Small tanks can lead to poor water quality and stress. A minimum of 5 gallons is strongly recommended to ensure a healthier and more comfortable environment.
What is the best tank size for multiple Betta fish?
If you plan to keep multiple Betta fish, a minimum of 10 gallons is recommended, with more space needed for each additional fish. However, it’s important to note that male Bettas are territorial and should not be housed together. Females can be kept in groups (a sorority) in larger tanks, ideally 20 gallons or more.
Do Betta fish need a larger tank if they are kept with other fish?
Yes, if you plan to keep Betta fish with other species, it’s best to use a larger tank, typically at least 10 gallons. This allows more swimming space and helps to maintain better water quality, which is beneficial for all the fish in the tank.
How many Betta fish can I keep in a 10-gallon tank?
In a 10-gallon tank, you can ideally keep one male Betta fish with a few female Betta fish or other compatible species. If you plan to create a Betta sorority, aim for at least 4-6 females to reduce aggression, and ensure there are plenty of hiding spots.
What factors should I consider when choosing a tank size for my Betta fish?
When choosing a tank size for your Betta fish, consider factors such as the number of fish you plan to keep, the filtration system, the presence of plants or decorations, and the overall maintenance effort you are willing to invest. A larger tank generally offers better water stability and conditions.
Is it necessary to have a heater in a Betta fish tank?
Yes, it is necessary to have a heater in a Betta fish tank, regardless of the size. Bettas thrive in warm water temperatures between 76°F and 82°F (24°C to 28°C). Consistent heating is crucial for their health, particularly in tanks larger than 5 gallons.
Can I use a divided tank for multiple Betta fish?
Yes, a divided tank can be a great option for keeping multiple Betta fish, particularly males, as it prevents aggression. Ensure that each section is at least 5 gallons to provide enough space for each fish, and use a secure divider to prevent direct line-of-sight and territorial disputes.
The Bottom Line
In conclusion, selecting the right tank size for your betta fish is crucial for their health and well-being. The ten products we highlighted in this article were chosen based on factors such as tank dimensions, build quality, ease of maintenance, and user reviews. We aimed to present a range of options that cater to different needs, whether you are a beginner looking for a small starter tank or an experienced aquarist seeking a larger setup to create a vibrant aquatic environment. Each of these tanks has been evaluated for its suitability for bettas, ensuring that your fish will have the space and conditions they need to thrive.
By following our curated list, you can make an informed decision that aligns with your specific preferences and requirements. Choosing the right tank not only enhances the lives of your betta fish but also contributes to a more enjoyable and rewarding aquarium experience for you. With the proper setup, you can create a stunning underwater habitat that allows your betta to flourish, showcasing their vibrant colors and unique behaviors. Trust in our selections to guide you toward a happy and healthy betta fish journey.
