Best 3 Gallon Fish Tank In 2024

Like all other things, the aquatic arts best 3 gallon fish tank comes with a lot of advantages and disadvantages.

There are many different aquariums for fish available and it can be difficult to decide which one best suits your needs. The first thing to think about is the size of the tank I require.

It’s a 3-gallon tank and is among the smallest tanks available, therefore it’s inexpensive and you’ll be able to install it wherever you want.

Small tanks are not without certain challenges, for instance, squeezing everything you require inside. However, they offer more applications than just holding one or two fish.

This guide reviews the top 3-gallon fish tanks that are available for sale, along with how to set it in place, stocking recommendations and lots of additional things.

Best 3 Gallon Fish Tank (Aquatic Arts Overview)

1. The Tetra Aquarium Kit

91nPl6P1vHL. AC SL1500
  • The water flow of the filter can be adjusted.
  • It is a high-quality nano tank.
  • The tank can be placed anywhere. It has a small footprint.
  • Best value starter kit.

2. MarineLand Aquarium

911mSfa5q9L. AC SL1500
  • This tank is easy to maintain and clean.
  • There is an adjustable flow rate of the filter.
  • LED lights have 2 settings (moonlight and daylight).
  • The lid is very secure.

3. GloFish Aquarium

81nrJUF5ErL. AC SL1500
  • This tank comes with easy-to-read instructions.
  • This is great for beginners.
  • The lights are good and bright.
  • It’s great value for money.
  • The filter of this tank has an adjustable flow.

4. Koller Aquaview 3 Gallon Tank Kit

81gZCVTVpXL. AC SL1500
  • One-of-a-kind style, unique.
  • Ideal for families with kids.
  • It is reasonably priced.
  • Easy to clean and maintain.

5. Aqueon 3 Gallon Aquarium

81bPsqtOTjL. AC SL1500
  • It has bright LED lights.
  • The aquarium is affordable and of good quality.
  • This is perfect for small spaces. It has a small footprint.
  • It is really easy to change the filter media.

Check for Amazon’s best-selling smaller fish tank collection to find other top sellers.

The first fish in my aquarium that I’ve ever owned was a betta in the year 2000 when I was only 14 years old. My parents purchased my very first fish in the smallest 3-gallon aquarium.

I owned the betta fish for a while prior to moving to a new apartment and giving it to my cousin, however, my cousin’s 3 gal tank where the Betta fish was in seemed to work pretty well.

Here’s the round-up of the top 3-gallon aquariums for fish that can be used at home or in the office. They can also be the perfect pet for small spaces.

All of them are simple to put together and maintain and are used to hold at the very least one fish.

It is evident that these tiny tanks are available in a variety of sizes and shapes.

Fish tank dimensions on tanks with larger sizes are typically rectangular. However, 3 gallons differ a lot more. They are square, round tall, and many more.

The benefits of the 3-gallon tank include:

  • They’re tiny enough to fit in any space.
  • There is no need for a dedicated tank stand
  • The shape isn’t a big distinction for the fish.

The most important thing is to make sure you don’t overstock your tank with fish that is too large as well as fish that are too big.

Remember that you will not be allowed to add lots of aquarium decorations, driftwood, or other similar items.

In general, the larger the tank is, the healthier your aquarium will become. That’s why a 3-gallon tank can cause problems due to its small size.

They’re simple to care for however, you can only have a few fish in the tank. They look stunning on a tiny apartment countertop, or they could be a great starting aquarium for young children.

If you’re planning to expand to your community in the near future then it’s better to invest in an additional tank. There are a few good community aquariums that go over the smaller 3-gallon tanks.

There aren’t many fish that could be kept in a 3-gallon tank, however, there are a few.

Many novice fish keepers believe that smaller tanks are easier to look after and maintain, but contrary to what they think.

Pollutants can quickly build up in smaller tanks due to the fact that there is a lower volume of water for them to diffuse into. It will take more time and effort to make sure that the water and the tank itself remain in good condition.

Typical dimensions can be 12 6 8 inches. The tank weighs 3lb when empty, and 27lb when filled, however, the numbers may differ among tanks.

A tank this small and lightweight can be put on any surface, but make sure that your surface is strong and wide enough to support it as it fills with decorations, water, and fish.

If all you want is just one fish or two, you can check our recommendations here.

The Best 3 Gallon Fish Tanks Reviewed

3 Gallon Starter Kit

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The Tetra Aquarium

Perfect for beginners and experienced fish This tank is perfect for smaller tropical fish.

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The Tetra Aquarium is an ideal starter tank for kids, students, or families, as well as offices.

It includes the Whisper power filter and a cartridge with a pedestal base to rest the tank on, as well as LED lighting.

This cube-shaped tank is stylish and sleek offering a panoramic view of the fish inside the tank.

The tank, as well as the cover, are made of durable plastic that resists cracking and shattering. Another reason is that it’s ideal for kids and families.


  • The flow can be adjusted by the filter to suit your needs.
  • This is a high-quality nano tank.
  • Tank has a compact footprint and can be put in any place.
  • A great value starter kit.


  • You’ll need an electric heater if you are looking for tropical fish.
  • The filter can take a while to perform its task.
  • It is made of acrylic which means it will scratch easily.

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Best Quality 3 Gallon Fish Tank

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It’s fantastic wherever you put it and is ideal for both advanced and novice aquarists.

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Marineland glass aquarium is a cube-shaped, unique tank with a rail light across the top. The lighting is available in moonlight and daylight LED settings. White lights produce illumination on the water that mirrors the sun, while the blue light emits an ethereal moonlight glow.

It is either a hinged or sliding glass canopy that allows you to get into the tank to provide food to the fish. The tank is equipped with an in-built filtration system with three stages with an adjustable flow rate.

This aquarium is extremely fashionable with its curved glass edges. The company that designed it is among the most well-known companies in the field and is known for its exceptional customer service.


  • The tank is easy to maintain and clean.
  • The filter is adjustable in flow rate.
  • LED lights come in two different modes (daylight as well as moonlight).
  • A very well-secure lid.


  • The lighting isn’t suitable for plants that require ample lighting.
  • It is not possible to put a heater on the plastic back section.
  • The filter is not strong enough for certain fish (e.g. a Betta).

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Best 3 Gallon Fish Tank For Beginners

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GloFish Aquarium

This 3-gallon aquarium could be the perfect tank for an aquarium that is a beginner’s first or a child’s first tank.

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This tank is ideal for a beginner or an infant’s first tank. It can be easily tucked away in the smallest space like a child’s bedroom or an office desk.

It comes with unique blue and white LED lights that really make the colors pop in any fish that you choose to keep.

The tank is equipped with the Whisper filter which keeps the aquarium’s water clear for your fish and it is also extremely quiet. The tank also includes the aquarium with a cover as well as the internal filter and also a medium filter cartridge.


  • It comes with easy-to-follow instructions.
  • This is a great option for newbies.
  • The light is bright.
  • This tank is an excellent value in terms of price.
  • The filter can be adjusted to regulate flow.


  • You’ll need an electric heater if you have tropical fish.
  • The lid won’t be firmly attached to the tank.
  • It is an acrylic tank and not glass.

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Best Value 3 Gallon Aquarium

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Koller Aquaview 3 Gallon Tank

This simple-to-set-up tank has a cylindrical shape and is made with just one piece of plastic, which offers strength and durability.

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This tank is great for the child’s first tank due to the materials it’s constructed from and also its design.

Because it’s a cylinder has no risk of bumping into the hard edge of the tank as the materials used are robust and durable. It’s easy to install and is equipped with energy-efficient LEDs as well as an automatic timer.

This aquarium is also equipped with an internal filter that cleans the water at an average that is 25 gallons per hour.


  • Unique unique design.
  • Perfect for families with children.
  • It’s a great price.
  • Clean and easy to maintain.


  • The circular shape makes it difficult to decorate.
  • The lights require batteries.
  • It is not ideal for fish that require an area to swim horizontally.

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Best 3 Gallon Fish Tank For Betta

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Aqueon 3 Gallon Tank

The glass aquarium is perfect if you’re looking for a premium start-up kit to get your Betta.

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Aqueon 3 gallon fish tank is an elegant and modern tank that is ideal for novices who wish to get started with keeping fish.

The triangular tank with a unique shape will be sure to be the focal point of any place you’d like to put it in any place, from an island countertop within the kitchen or on your desk at work.

It is equipped with soft white LED lights that are hidden as well and it has an internal filter that comes preloaded with carbon filters. carbon filter.

It is necessary to transfer your Betta to the 5-gallon tank when they get older.


  • These LED lights are very bright.
  • Tank is inexpensive and is of high quality.
  • It is small in footprint which is ideal for smaller areas.
  • The process of changing the filter media is very simple.


  • The filter isn’t particularly robust, but it’s perfect for a tank of this size.
  • You should add the heater to store tropical fish.
  • There are some areas at the top of the hill that are hard to wash.

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3 Gallon Fish Tank Equipment

The process of starting a new tank for fish isn’t as simple as filling it up with water, then adding a few fish. There are so many other parts.

Sometimes, you can purchase tanks that are part of a kit that includes everything you require to start it up. However, this isn’t often the case however.

Here is a complete list of the equipment you’ll need:


A tank can’t be fully complete without a filter, certainly not if you wish the tank to create a healthy one. This is among the most crucial elements of any aquarium, as it is responsible for the cleaning of the water.

Food waste, decaying organic matter, toxic chemicals, and waste products are removed when water flows by the filter.

This is vital for a 3-gallon tank because it is a tiny amount of water. This allows pollution to rapidly build up therefore a well-designed aquatic arts filtering system is essential.

The water is drawn into the inlet, then passed by the media filter, and then discharged into the tank. The filter media must be changed every month or every two months to ensure that everything functions properly.


Some tanks may not require heating. They are best placed in tanks that have fish that come from naturally warmer waters. This typically is tropical as well as marine fish, however, the marine setup isn’t an option for tanks this small.

It is likely that your tropical fish will need the water to be heated within a specific interval. It will vary from species, and you’ll need to conduct a bit of study to determine the right temperature.

The heaters are available in many different sizes. They are more powerful in tanks with larger capacities because they are stronger to warm the additional water. A 3-gallon tank requires a small heater.

The heater in the tank is somewhere between 10-15 watts.


Many species require a light source in order to signal day and night. If you keep any plants, then lighting is essential to photosynthesis and development.

Bulbs can be purchased that generate different levels of light. It is your responsibility to investigate the light you purchase to ensure it’s secure for all life that you keep in the aquarium.

Other Equipment

Tanks of this size rarely come with a stand as they can be placed on many surfaces. Choose a surface within your home that is higher than the base of the tank. It should be able to support the weight of the tank when it is full of water.

A tight-fitting hood is also important as it prevents fish from flying out of the top.

The tank’s bottom must be covered by an inch-thick layer of the substrate. Gravel is typically acceptable but certain bottom-dwelling fish may prefer Sand.

It is then possible to put ornaments over the substrate. There isn’t much room which means you’ll be unable to squeeze in many, but ideally, the majority of the area is left open in order for fish to pass through.

A thermometer is an excellent tool to determine whether the temperature is accurate. It is best to place it on the opposite end of the heater to provide the best estimation of the temperature of the water.

Cleansing equipment (like algae magnets and gravel vacuums) can be helpful in cleaning. Fishnets are the most efficient method of moving fish between various tanks. All water that is put into the aquarium has to have been first treated using the aid of a de-chlorinator in order to remove the toxic chlorine from the tap water.

Best Fish For 3 Gallon Tanks

There are many species in the fishkeeping world, however, only a few species can be kept within a 3-gallon tank.

Your fish should be small enough to be able to fit comfortably otherwise they could be infected or stress-induced. You’ll be unable to accommodate a large number of fish also since every fish you add requires their individual space.

Juveniles can be a viable alternative. They are smaller but you’ll have to relocate them to an area that is larger when they get bigger to avoid overcrowding.

Here are some ideas for tanks on this site:

  • Otocinclus The Otocinclus bottom-dweller helps to cleanse your aquarium by eating algae that have accumulated on surfaces.
  • Guppies come in a variety of colors and can lighten your tank.
  • Neon Tetras – This is one of the most famous species of aquarium. They shoal to make some stunning colors.
  • Zebra Danios Zebra Danios is one of the hardy species, making it ideal for novices.
  • Bettas are a type of bet that needs to be handled in a single unit. They’re not just very aggressive, but they’re also bigger than the majority of options.

Ideally, all of these species require bigger tanks in order to thrive, so they should be relocated as they grow.

You can keep invertebrates inside the space of a 3-gallon tank. In reality, they’ll be more relaxed than fish due to the fact that they aren’t moving around in the same way.

Dwarf shrimp such as Harlequin and cherry shrimp may be kept in groups of 5-8. Small snails, similar to ramshorn snails, can be kept in the same quantities.

Other Fish For 3 Gallon Aquarium

What other fish are you able to keep in the 3 or 3.5-gallon tank?

Other fish suggested as a 3-gallon fish tank are:

  • Salt & Pepper Cory
  • White Cloud Minnows

However, these fish require to be maintained in large quantities that are not able to be contained within the confines of a 3-gallon tank.

It is not recommended to keep those 2 species in such a small tank. They require a larger tank and should be kept in groups in the range of 6+.

Aquatic Arts 3 Gallon Fish Tank Ideas

Fish tanks have numerous uses. For instance, a 3-gallon tank is too cramped to hold the majority of fish, however, a smaller tank with this type of capacity can serve different uses.

1. Nano Tank

It is a term used to describe small aquariums. There’s no precise definition, but nano tanks generally weigh less than 10 gallons.

A small number of species can be accommodated inside the nano tank, and you aren’t able to keep many species. In the case of a 3-gallon nano tank, you are limited to one Betta.

2. Quarantine Tank

The disease can become a major issue in certain tanks. If there’s an outbreak that is not treated, it could become a problem for all your fish.

Being alert to the signs early and being able to recognize the signs early is key. If you suspect that your fish is sick transfer them onto your 3-gallon tank. The tank is then a quarantine tank. The fish infected is isolated thus it won’t be able to transmit the disease. After the fish has recovered, it can be moved back to the original tank.

If you are unsure about the quality of your fish at the time you first receive them in your tank, ensuring they are quarantined prior to adding them to the principal tank could be a better alternative.

3. Breeding Tank

Small tanks make excellent breeding tanks since the majority of the fish are juveniles, which means they’re tiny enough to fit within just 3 gallons.

If you discover that your aquarium fish is pregnant it is possible to transfer them to your 3-gallon tank to wait until the time you give birth. The fish that are still young will need to be relocated after they have outgrown their tank.

4. Feeder Fish

Live foods are a nutritious option for feeding time. A 3-gallon tank provides you with the chance to plant your own fresh food.

Feeder fish are tiny species that are bred to provide food to larger fish. They can be grown in a 3-gallon tank, and then moved to the main tank to feed.

5. Paludarium

A different option would be to venture into the plant kingdom by experimenting with paludarium.

To avoid mixing up plants with fish, you take out the fish and fill in the space with plants. You can fill the space with a dense assortment of plants.

It is important to keep in consideration the requirements for space in your plants. If they are overly dense then they’ll rival to get resources.

Frequently Asked Questions

How Many Fish Can I Keep In A 3 Gallon Aquarium?

It will be contingent on the species you plan to keep. There’s not a lot of space for them, which means that numbers will be small. As an example, you’ll only be allowed to keep Bettas as a separate unit.

Shoaling species need more space therefore, you should be able to group them into a decently large group. They need plenty of space to swim.

Should I Use A 3 Gallon Tank?

This is a bit small to hold fish for prolonged periods. There isn’t always enough room for swimming, and some species may overflow the tank when they grow.

There are other ways that you can utilize the tank. 3 gallons of water is sufficient for a quarantine tank, breeding tank, or to house feeder fish.

Best Small Fish Tanks

As I said earlier You can browse the entirety of the Amazon Best Sellers here as well as there are many other alternatives.

If you are looking to fill a tank that includes tropical fish or goldfish, our advice is that you should always get a bigger tank.

There’s no need for the luxury of a 40-gallon fish tank or similar, However, 10 gallons and above mean you have the ability to keep a few more fish without worrying about them getting stressed out.

The end result is that it will depend on:

  • The space you need to have for keeping the fish
  • The time you’d like to incorporate into them
  • Your budget

Take a look at all your possibilities and test some aquariums if you need to be. Everyone starts somewhere, and you’ll be able to learn quickly after you’ve taken care of your fish.

Be sure to purchase a fish tank thermometer to keep track of the temperature of the water. One option of stick-on option might be best for smaller aquariums.


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The Tetra Aquarium

Ideal for novices and experienced fishkeepers. This tank is perfect for keeping small tropical fish.

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If you’re planning to start an aquarium for the first time, you want the largest capacity aquarium you can fit/afford. A larger tank is simpler to keep clean, offers more options for filling it up, and provides the fish more space.

Being one of the most compact tanks in the market, the Aquatic Art’s best 3 gallon fish tank is utilized when fish are in it for a brief time.

Maybe your fish keeps becoming pregnant and you’re in need of a space for them to give birth. Perhaps your species is sick and you have to isolate it to safeguard the rest of your fish. A 3-gallon tank can fill the needs of these fish.

Before you purchase, it is important to consider both your requirements and the requirements of the fish.

These are our top picks for the best 3-gallon fish tanks. However, tell us your favorite in the comments section below.


Dibyajyoti Bordoloi is the creator and author of, a third-generation experienced fish keeper and owner of a successful pet breeding farm. He is also a member of the Center for Wildlife Rehabilitation And Conservation (Assam), the Marine Aquarium Societies of North East India, and the Kaziranga Nature Conservancy of Assam.

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