The Best 3 Gallon Fish Tank – Small Fish Tanks For Easy Care

If you’re looking for something to simply brighten up your room, but you don’t want a lot of hassle, a 3 gallon fish tank might be just what you’re looking for.


You cannot hold many fish in a tank this size (we’ll get into that below), but a small fish tank like this can complement a small apartment counter top, or be a great starter aquarium for children.


3 gallon fish tank siamese fighter betta


3 Gallon Fish Tank Reviews


A three gallon fish tank is considered very small and care should be taken to choose the right fish. It is easy to overstock small tanks, as they cannot hold many fish at all. If you want to keep a variety of fish, your best bet would be to start with a 10 gallon fish tank.


Let’s consider what type of fish, and how many, can be kept in a 3 gallon tank. After that, we’ll show you 3 recommended fish tanks.


3 Gallon Nano Tank Fish


Bettas – Male or female Bettas are the most common type of fish kept in a 3 gallon tank – though they should not be kept together. One colorful male Betta will be very happy on his own. A Betta is the best 3 gallon fish tank fish.


Guppies – Male guppies in particular are popular fish for beginners with small tanks. They have spectacular, colorful tails and are a lot of fun to watch.


Tetras – There are a variety of this species, with one of the most common kinds being Neon Tetras. They are schooling fish which means they need to be kept in numbers for their health and happiness. You could keep 4 or 5 small Neon Tetras in a 3 gallon fish tank.


Other fish that are sometimes recommended for a 3 gallon fish tank include:

  • Zebra Danios
  • Salt & Pepper Cory
  • White Cloud Minnows


However, these really need to be kept in such numbers that cannot be contained in a 3 gallon tank. It is not advisable to have those species in such a small tank. They need 10 gallons and above, and to be kept in numbers of 6+.


Tetra LED Cube Shaped 3 Gallon Aquarium with Pedestal Base


best 3 gallon fish tank aquarium Tetra LED cube


The Tetra LED Cube fish tank is our top pick for the best 3 gallon fish tank. This small tank is great for children, beginners, or those just wanting something small and special for their home.  The dimensions are 10.5 x 10 x 10 inches.





What’s so great about this tank?

  • The rimless sides and top give great unobstructed views into the tank
  • The tank sits atop a classy black pedestal
  • LED lighting illuminates the tank and puts a spotlight on the fish
  • A lid to keep the cat out
  • Comes with a Whisper power filter and Bio-Bag Small Cartridge
  • Easy feeding hole in the top of the tank


This tank is fantastic for keeping a Betta Fish (you can order Bettas online), along with a live plant, gravel and decorations. You and the kids will enjoy seeing and interacting with your new friend everyday.


SEE FOR YOURSELF: Read The Reviews, Check The Price & Buy


Fluval Spec III Aquarium Kit, 2.6-Gallon


best fish tank for betta fish 3 gallon fish tank

Next up we’ve got the Fluval Spec III Aquarium Kit. Now this is technically a 2.6 gallon fish tank, but it’s too nice not to include. This tank is certainly more expensive, but that’s because it’s higher quality and has added features. It can be purchased in white (as pictured) or in black. The overall dimensions are 11.8 x 10.8 x 8.7 inches.


Fluval are a known manufacturer of high quality aquarium tanks and products. You can see the guys from Fluval set this tank up and describe some of the features in the following video.



WANT SALTWATER? The Biocube Saltwater Starter Fish Tank Review




What makes this tank so special?

  • Glass tank with stylish aluminium trim
  • Overhanging lighting system with 31 LED lamps
  • Includes a strong circulation pump with 3 stage filtration system and adjustable output nozzle
  • Includes quality filter media
  • Tank has effective mechanical, chemical and biological filtration
  • Back chamber to hide filter and pump


This tank will look amazing in your kitchen or office, being great for small spaces that need a cool feature. If you have a little more room you can also consider upgrading to the 5 gallon tank. If you buy Fluval, you can be sure of getting a good product and great service.


SEE FOR YOURSELF: Read The Fluval Reviews & See The Price


MarineLand Contour Glass Aquarium Kit with Rail Light

The MarineLand Contour Glass Aquarium Kit is an excellent 3 gallon tank at a mid-range price. The special features of this tank include the sleek contoured glass edges and rail lighting with dual colored lighting. The 3 gallon tank dimensions are 12 x 12 x 12.5 inches.


Get a glimpse of this tank and check out the lighting in the following video.





Why should you consider this tank?

  • Comes ready to go – just add water, fish, gravel & decorations
  • The contoured glass front looks amazing
  • Sits on a raised black pedestal
  • Blue and daylight LED lighting – settings are off, blue or full spectrum
  • Hidden filtration and pump – comes with a filter cartridge
  • Well priced


Depending on the climate where you live, you may need to get a heater for the tank. Bettas need a water temperature of between 76 and 80°F. You can find some recommended heaters linked to in the resource section below.


MORE INFO? Read Over 300 Reviews And Compare Prices


3 Gallon Fish Tank Resources


Those are our top 3 picks for best 3 gallon fish tanks. Check out the following resources below, and leave any comments or questions in the comments and we’ll get back to you asap. Thanks for stopping by!



(Please note: This post contains affiliate links. Read our full disclosure policy here.)

Leave a Reply