When there’s so much choice on the market, picking the best little fish tank for your finned buddies is no easy task. Fish make beautiful pets that mesmerize and relax those around them, whether you’re trying to add a touch of class to the home, reduce stress, or simply enjoy the thought of watching them explore their new environment.

What is the smallest fish tank you can have?

If you’re new to choosing the ideal pet fish for you, you’ll probably be considering not just the home of your new pet, but also any other fish tank accessories that will go inside or outside. A fish tank stand, in addition to the tank itself, may be considered for additional support or style.

Then there are the necessities for fish maintenance. A fish feeder ensures that your pets get the proper amount of food every day, and choosing the right fish food is crucial.

Small Fish Tanks

Small fish tanks, in contrast to the 20-gallon-plus behemoths on the market, are designed to be compact and attractive, but they lack the excitement of creating a big aquatic landscape for your pets. If you’re not sure what size tank is appropriate for your fish, our comprehensive guide to the best fish tank can help.

The requirements for a small fish tank are identical to those for larger tanks. You’ll have to heat and filter them, as well as stock them with just enough fish, never too many, and feed them. Then there’s the little upkeep, such as cleaning and replacing water and filter cartridges.

If you meet these simple needs, a modest fish tank will pay for itself in terms of satisfaction and delight many times over. Here are some of the best small fish tanks you can purchase online:

Koller Products AquaView 4.5-Gallon

Tech Reviews - Koller Products AquaView - Tech News

  • Volume: 4.5gal
  • Heater capacity: N/A
  • Weight: 3.5lbs
  • Dimensions: 14.6 x 10.75 x 13.25 inches
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This Koller tank has seven different colors of LED light and four transitions to show off your fish and really catch attention on a shelf or desk. This tank’s design is so simple that it’s an instant winner — it’s just a circular rectangle of acrylic with no seams or sharp corners. The power filter only takes up a small amount of space at the top of the tank’s rear, so you can view the fish from any angle.

Simple dual-sided cartridges wrapped in poly-fiber floss strain out floating particles while the carbon treats water discoloration and odors. It’s worth mentioning that the filter is fairly powerful, so anyone keeping long-finned or weak-swimming species may want to cover the intake with mesh to prevent fish from getting pulled inside.

Because of the tank’s single-piece structure, it’s almost leakproof, and the bright LEDs lighting down make it ideal for situations where it could get occasionally bumped. It won’t stand up to a repeated beating, but anyone looking for a tank for a child’s room might consider this one. Seven different hues are available for the lights: amber, aqua, blue, green, purple, red, and white. They can be adjusted to cycle or be locked to a single color.

Aqueon LED MiniBow Aquarium Starter Kit

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  • Volume: 5gal
  • Heater capacity: N/A
  • Weight: 2.15 lbs
  • Dimensions: 8.88 x 6.63 x 9.75 inches
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Betta fish are popular among fishkeeping beginners because of their ability to breathe from the surface via the labyrinth organ. The most well-known member of the species is the stunning Siamese fighting fish, which should be kept alone or with carefully selected tank mates, but there are numerous other bettas that lack its aggressiveness.

Bettas, contrary to popular belief, can be housed in small enclosures due to their breathing habits, but they thrive in five-gallon tanks like this one. Bettas, like many other fish, require a water temperature of 76-81F, so if your space is cooler, consider investing in a tank with a heater or adding one to this package.

The tank itself is made of acrylic, but unlike other scratch-resistant materials, this one is readily scratched. This isn’t a problem after the tank is installed, but it can be a problem during delivery. The tank is shipped in its own container to avoid damage, however, mishaps do occur. Once filled and lit, the curving front looks fantastic, and the included Aqueon power filter takes up very little room.

Fluval Sea Flex

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  • Volume: 9gal 
  • Heater capacity: N/A 
  • Weight: 11lbs 
  • Dimensions: 14 x 13 x 13 inches
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Fluval Flex all-in-one aquariums are ideal for beginners.  The aquarium is sleek and has a contemporary design that fits into any living environment thanks to its All-In-One form factor. The tank is made of curved glass with a great degree of transparency. The aquarium’s three-stage filtration system is built-in. Nothing is hung from the aquarium’s sides or back. This looks excellent and makes placing the aquarium in your living room more straightforward.

A foam filter in the filtration system catches water particles such as waste, algae, and uneaten fish food. For crystal-clear water, a bag of activated carbon eliminates dissolved organics and yellow hues. The biofiltration stage removes toxic ammonia and nitrite from the water, which can stress the fish and cause sickness.

Water is circulated through the filter materials and returned to the tank by an internal water pump. A built-in LED lighting system is included in the tank lid. The Flexpad remote control can be used to control the light colors and timing. You can even add cloud cover and lightning to your scene!

The Fluval Flex aquarium comes in two sizes: 9 and 15 gallons.

MarineLand 5 Gallon Portrait Glass LED Aquarium Kit

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  • Volume: 5gal 
  • Heater capacity: 50W 
  • Weight: 12lbs 
  • Dimensions: 11.8 x 11.6 x 17 inches
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MarineLand’s upright tank is sleek and elegant, and it looks fantastic in any setting. Although five gallons of water isn’t much, it’s enough to support a healthy community of colorful fish if you keep up with filtration and maintenance.

The MarineLand tank has a three-stage filter with replacement activated carbon cartridges (you’ll go through one every month or so) and a Tetra submersible heater that’s already set to the right temperature.

The three artificial plants included in the kit are sufficient to get started, but you may discover that you need more to create a complete display. Because the rear of the tank is black, a wall of foliage that pushes the fish forward so you can see them better will look nice. Because of the tank’s height, taller aquarium plants can be used, which can look very appealing.

The tank is supported by its own weight on a robust plastic foundation, and the front and sides are composed of one piece of seamless glass. Blue and white LEDs provide lighting, giving the water a natural shimmering aspect as it flows, as well as a moonlit appearance if turned on at night.

Vepotek NANO Kit

Tech Reviews - Vepotek Aquarium - Tech News

  • Edit: Volume: 5gal 
  • Heater capacity: 50W 
  • Weight: 12lbs 
  • Dimensions: 11.8 x 11.6 x 17 inches
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Nano aquariums are popular among some people because of their small size and unique appearance. They can look fantastic with the matching accessories, and the Vepotek Nano accessories and features give you a good start.

This nano “kit” already includes a filter as well as lights. The illumination is very unique since the 39 LED lights are available in four different hues. The lighting system contains a number of features, including a built-in timer.

The aquarium is made of glass, which contributes to the overall attractiveness. While acrylic has many advantages, the biggest disadvantage is that its surface is readily scratched. Some acrylic tanks don’t last long since the material’s clarity deteriorates after a number of unintentional scratches. Glass, on the other hand, is very resistant to scratches.

Tetra Crescent Acrylic Aquarium Kit 5

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  • Volume: 5gal
  • Heater capacity: N/A
  • Weight: 1lbs
  • Dimensions: 16 x 11.2 x 13.2 inches
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Tetra’s Crescent will stand out wherever you put it thanks to its curved front and dazzling LED lights. The front, made of one piece of acrylic with a separate lid and base, improves the visibility of your fish.

The popular Tetra Whisper power filter is included on the inside, however, you’ll need to purchase a heater separately. If you only want to keep room-temperature fish, this is acceptable, but anyone who wants to keep bright, tropical species will need to add a heater to raise the temperature to roughly 77℉.

The LED lights are housed in a narrow black cover that is bright enough to encourage live plants to grow, but fake plants will fit in just as well. Their intensity contrasts wonderfully with the colors of the fish. The cover also has an exposed oval for feeding, which cautious owners should cover with a mesh panel to prevent jumping fish from going overboard.

Disposable Bio-bags are used as the filtration medium, and they may be readily swapped out of the black, cylindrical filter. They have a dual-sided mesh to collect floating debris, a coating of carbon to reduce odors and discoloration, and Tetra’s Water Clarifier to keep particles from building up in the water and on the glass. The Whisper filter is a popular option, and if properly maintained, it will do its work quietly.

 

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