5 Gallon Fish Tanks & Aquariums (Kits & more)

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A 5 gallon aquarium is a great size for most homes and is small enough to fit comfortably in a room without taking up too much space. It’s also an adequate volume for a good amount of smaller fish, as well as a few plants and ornaments if you want to add some style to the tank. Before we get into the more detailed guide, here is a quick overview of the highest rated tanks we included:

Best 5 gallon aquariumsSellerWhere to buy
Marineland kitAmazonCheck Price
Koller kitAmazonCheck Price
Aqueon starter kitAmazonCheck Price
Fluval Spec kitAmazonCheck Price


And now for the more detailed guide:

5 gal Tetra aquarium

Tetra Crescent 5 Gallon Fish Tank Kit (Acrylic, less than $50)

We decided to kick off our list with this awesome 5 gallon aquarium from Tetra because it has a very impressive 4 star rating from over 210 reviews. When you take a look at the tank, it isn’t hard to see why. It’s probably easier if I just list the features:

  • Currently less than $50
  • Energy efficient LED lighting
  • Made from acrylic
  • Curved to provide a unique viewing experience
  • Whisper internal filtration
  • Dimensions – 17 inches x 11 inches x 13 inches
5 gallon marina aquarium

Marina LED Aquarium Kit

Although this tank is also available in a 10 gallon and 20 gallon variety, we’re obviously going to be talking about the 5 gallon version in this post. Unfortunately we’ve only got a picture of the box to show (it’s a nice looking box I suppose), but if you read some of the reviews there are people who’ve posted pictures of their tanks that you can check out. Other notable features of this aquarium includes:

  • Currently available for less than $70
  • Made from glass
  • 4 and a half star rating from over 190 reviews
  • Clip-on filter
  • LED lighting fixture
  • Fish net & food
  • Set up/care guide
  • Dimensions – 16 inches x 8.5 inches x 10.5 inches
Marina 5 gallon LED fish tank

Marina LED 5 Gallon Fish Tank Kit

This cute little 5 gallon tank from Top Fin has a really unique design that we’ve absolutely fallen head over heels for. It might look like it has some kind of weird quiff going on, but that’s actually a nifty little LED feature that really sets this tank apart from most other tanks of a similar size. Other noteworthy features of this aquarium include:

  • Currently available for less than $70
  • Built in filtration – keeps the water clean and healthy
  • Made from glass
  • LED light feature
  • 14 inches x 9.5 inches x 9.5 inches
  • Average score of 4 stars from over 65 reviews
A portrait fish tank

Marineland Portrait Aquarium

This is described as a ‘portrait aquarium’, which essentially means it was designed to show off your fish – that’s exactly what we think it’s perfect for Betta fish, arguably the most attractive species of fish out there. At 5 gallons, it’s pretty much the perfect size fish tank for a Betta fish, and it also comes with a few other extras:

  • Currently available for less than $75
  • Hidden back panel filtration – keeps the tank clean and your Betta healthy without taking up too much space
  • Bright white & blue LED lighting
  • Sliding glass canopy – makes it easy to admire your Betta fish
  • 4.5 star rating on Amazon from 400 reviews – wow.
A Fluval edge aquarium

Fluval Chi Aquarium (5 Gallons)

Although this fish tank isn’t actually designed specifically for Betta fish, it’s simply a well built aquarium that is perfect for smaller species of fish. It’s a fairly plain tank, which isn’t full of unnecessary features that will get in the way of your Betta. The one feature that this tank does include is a small ‘garden’ in the middle of the aquarium, providing your Betta with the cover and privacy that they so often crave. This aquarium includes:

  • Base stand
  • Low voltage LED lighting system (consisting of 17 lights)
  •  Filter media
  • Water conditioner
a 5 gallon Marineland aquarium

Marineland 5 Gallon Betta Escape Hexagon Aquarium

Despite having a name that makes it sound like some kind of theme park ride which is a hybrid of a haunted house and a log flume, the Marineland Escape is an excellent choice if you’re looking for a fish tank for your Betta fish. The main selling point of this aquarium is the ‘multiple hex-shaped viewing panels’ (their words not ours) which allow for 360 viewing of your Betta. You’ll also get:

  • LED hood
  • hidden filtration system
  • Adjustable flow pump
  • Made from plastic
Top Fin Aquaponics aquarium for desk

Top Fin Aquaponics 5 Gallon Desk Aquarium

This 5 gallon desk aquarium from Top Fin is quite similar in style to the first tank in this list, mainly because of the LED light feature that you see over the top of the tank. The fish tank has just about everything you need to get started (aside from fish), including:

  • Planter lid
  • Integrated filter
  • LED fixture – helps to grow plants
  • Dimensions – 14 inches x 10 inches x 10 inches
a 5 gallon imaginarium

Imagitarium 5 Gallon Freshwater Aquarium

Calling this fish tank the ‘Imagitarium’ makes it sound like something from Willy Wonka rather than a vessel for your beloved fishy friend, but trust us this is a totally awesome 5 gallon aquarium! This is described as a desktop tank, which essentially means it’s perfect for sitting on a desk. It’s made with acrylic, which is stronger and lighter than glass. Other notable features of this tank include:

  • Blue/white LED lighting with day/night settings
  • Internal filtration system
  • Easy access lid
  • 9.7 inches x 16.5 x 12.5

Aqueon MiniBow Aquarium Kit

Another Aqueon product in this list (we’re pretty used to their name around here) and another desktop aquarium. What makes this tank even more perfect for sitting on a work desk is that it is fitted with QuietFlow filtration, making it very quiet. Other notable features of this 5 gal beauty include:

  • Filter and pump included
  • LED lighting system
  • Water conditioner
  • Fish food sample
  • Easy cleaning

Fluval Spec V Desktop Aquarium Kit

This is a pretty stylish 5 gallon aquarium kit from Fluval, which includes just about everything you’d need to get started. We may as well just list it all as there is so much included! Here you go:

  • Adjustable pump
  • Filter with carbon/biological inserts
  • LED lamps
  • 3 stage filtration system
An aqua culture 5 gal tank

Aqua Culture Aquarium Starter Kit (5 gallons)

How nice to round off this epic list (surely the most epic on the internet) with a cute little aquarium starter kit, perfect for beginners. This tank would be perfect for a kid who is just getting started with their fishkeeping adventures, and who wants to have a little tank in their room. Cool features of this aquarium include:

  • Long life LED lighting system
  • Food sample
  • Internal filter

5 Gallon Fish Tanks FAQ

Our list of 5 gallon fish tanks and aquariums features a few tanks that you might recognize from our ‘Betta‘ page, as well as some other high end items that you won’t find anywhere else on the site. We think that 5 gallons is a great size for a smaller fish and if you have the space for a tank of this size, you should absolutely go for it.

Are these best for Betta fish?

Yes, 5 gallons is probably big enough for a Betta fish. However you should still ensure that you follow the general rule of thumb for all fish tanks (1 inch of fish per gallon of aquarium).

How many fish could you fit in a 5 gallon tank?

Again, it depends on the type and size of the fish. See our answer above for the rule that you should always use when deciding whether or not your tank will be suitable for your fish.