The Best 5 Gallon Fish Tanks for 2021


If you would like to start with tank keeping, you might be on the lookout for the best 5 gallon fish tanks especially if you would like to keep small fishes like gold fish.

But then, finding one can be quite confusing because of the wide selection available.  You will find different brands, models and features each item has.  For this reason, determine your needs and know the features important for you. Let us help!

Today, we’re highlighting the top six picks in the category along with each product’s pros and cons. In addition, we’re answering common questions and highlighting the things to look for when shopping around for a small fish tank. Let’s begin.

What is the Best 5 Gallon Fish Tank for 2021

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Top 6 Best 5 Gallon Fish Tanks Reviews

1. MarineLand 5 Gallon Portrait Glass LED Aquarium Kit


If you are a first-time aquarium keeper looking for the best tank for your fish, you must check out the Marinland 5 Gallon Portrait Glass LED Aquarium Kit.

This 5-gallon portrait glass aquarium looks beautiful and classy. It has rimless edges that are nice to look at.

The base may be made of plastic but it is sturdy and solidly built.

It has 3-stage filtration system hidden in the back panel with adjustable flow filter pump that is good.

The kit also includes a bright white and blue LED light to help enhance the beauty of your aquarium.

In addition, the tank is also very easy to clean. However, the only thing that concerns me is how the filter system collects debris. It is difficult to clean. But with that aside, this kit is still a good choice. And, it is highly recommended for first timers.


  • Affordable
  • Aquarium tank is easy to clean
  • Easy to assemble
  • Looks beautiful and classy
  • Solidly built


  • Debris was collected in the back panel which is hard to clean

2. Koller Products Panaview 5-Gallon Aquarium Kit


The Koller Aquarium Kit is made of impact-resistant plastic which durability is guaranteed. The plastic is clear up to the point that it can be considered as glass at one glance.

Unlike the glass made aquarium, this tank is really sturdy and secured against any possible leakage. The setup is easy to do and this tank does not require high maintenance.

What I like most about this product is the LED light with 7 stunning color selections. It is energy efficient and really highlights the beauty of the aquarium.

This product also features a powerful internal power filter, which is a good. It efficiently removes all organic contaminants by using Tetra Whisper S replacement filter cartridges.

The only flaw about this kit is the issue about the filter. However, it still works fine. Overall, this aquarium kit is still great, affordable, and a best choice.


  • Durable impact resistant plastic
  • Energy efficient with LED lightning with 7 stunning color selections
  • Powerful internal power filter that cleans and purifies the water
  • Secured against any leakage
  • Easy to maintain


  • Filter issue

3. Aqueon LED MiniBow Aquarium Starter Kits


The Starter Kits are a good-looking compact and space saving fish tank with an elevated black base. If you are a beginner and looking for the best aquarium to start with, this one is recommended for you.

Since first timers usually started with bettas, this tank is the best choice. It is simple to setup and rather easy to maintain.

This fish tank includes Aqueon QuietFlow filtration with small filter cartridges to clean the water.

The LED light is bright and also good addition to this kit.

However, what concerns me about this tank is the open filter. You may put a screen on it to ensure the safety of your fishes. But overall, this fish tank is still a good choice for first timers. Check it out yourself.


  • Good-looking compact fish tank
  • Simple to setup and easy maintenance
  • Affordable
  • LED lighting
  • Includes water filtration and filter cartridges


  • Open- filter issue

4. GloFish 5 Gallon Aquarium Kit Fish Tank


The GloFish 5 Gallon Aquarium Kit is a crescent shaped plastic aquarium with attractive 15 blue LED lighting.

The stunning LED light helps to illuminate the beauty of your tank.

What is a plus about this kit is that the package includes heater, stick-on thermometer, two packs of Glofish plants and a Glofish anemone.

The heater is really a good addition in this kit. It helps to keep the fishes warm and comfortable when the water gets cold. It is recommended to have if you want your pets to last longer.

However, this kit uses a Tetra Whisper internal filter that is good but is rather risky for small fishes. Aside from that, this aquarium kit is still a good choice. It is pocket-friendly and fitted for new aquarium keepers.


  • Durable crescent shape plastic aquarium
  • Attractive LED lighting
  • Easy to setup and low maintenance
  • Includes heater
  • Free Glofish plants and anemone


  • Filter issue

5. MarineLand Contour Glass Aquarium Kit with Rail Light


The MarineLand Contour Glass Aquarium Kit with a Rail Light is the most stunning fish tank you must really have. It is stylishly made and a good addition to your home.

The tank features a 5-gallon curved glass with a LED lighting system so bright that will surely make your home vibrant with life.

It uses an advance 3-stage filtration that keeps the tank healthy and clean. It also includes an adjustable pump and a RITE-SIZE Z cartridge.

The only flaw I have seen in this product is the filtration. It is difficult to access during clean up. But overall, this aquarium kit is a good catch. It may be rather costly but it is no doubt worth the price.


  • Elegant aquarium kit with rail light
  • Daylight and moon light settings for the LED
  • Quick and easy to setup and maintain
  • Glass canopy for easy access
  • Advance filtration


  • Filter motor is difficult to access

6. Fluval Spec V Aquarium Kit 5-Gallon


This Fluval Spec V Kit is a 5-gallon nano aquarium with glass tank engraved with aluminum trim. It is designed for small areas such as side tables, desktops, countertops, etc.

It has powerful 37 LED lighting system which gives a brilliant illumination of the landscape of your aquarium. The packaged also includes foam block, activated carbon, BioMax bio rings, and safe voltage transformer.

In addition, the kit includes a circulation pump along with adjustable output nozzle and 3-stage filtration system.

If you think that the water current is too strong for your fishes even if the circulation is at its lowest, Fluval Edge Pre-filter Sponge is highly recommended. It will neutralize the current that is good for your pet.

However, this product has a filter issue that is risky for small fishes. But aside from that, it is still a best choice if you have that small problem to check.


  • Small and impressive
  • Easy to maintain and setup
  • Stylish design
  • LED lightning system appropriate for health plant growth
  • Powerful 3-stage chemical, mechanical, and biological filtration


  • Filter issue

5 Gallon Fish Tank Buying Guide

Fish tanks are great for those who desire to have a small set-up or those who want the aesthetic and peace that comes with having an aquarium.

Buying a fish tank can be daunting task, given the number of sizes and styles available in the market. However, this shouldn’t discourage you.

Of course, the best 5-gallon fish tank depends on a number of factors and considerations. To help you out, here are some factors that will help you make your purchase.


One of the most important factors is the tank’s durability. While durable tanks may be more expensive, you can definitely save you money in the end.

Look for tanks that are made out of thick, strong glass and are watertight. A durable construction will mean that the tank can withstand constant water pressure.


Since you are constantly cleaning this fish tank, make sure that it is easy to maintain. Find one that is durable but light, so that it will be easy to move around.


Aquarium tanks should also be easy to set-up. Otherwise, people would quickly lose interest due to the difficult process. To make it easier, find one that comes with instructions or a guidebook.

Aesthetics and Design

Of course, aquarium tanks are also used to add beauty and elegance into any space. Hence, it’s important to purchase one that has a visually pleasing appearance. There are many styles available in the market. Just be sure to choose one that matches with your home and your personality.

Extra Features

There are some aquariums that come with numerous features such as LED lights, filter covers and the like. Some aquariums even come with free plastic plants and pebbles. This is a matter of preference; hence, you can choose if you want the extra feature or not.

What is a 5 Gallon Fish Tank?


A 5-gallon fish tank is the smallest tank size that fish keepers recommend. Any smaller than this would result into difficulties in care and maintenance, fish cycles and space.

It’s small and compact; hence, it won’t take up a lot of space. With this, you can easily move the fish tank around.

The 5-gallon fish tank is commonly used by breeders and those who want to have nano set-ups.

Types of  5 Gallon Fish Tank

A 5-gallon fish tank differs on the set-up it offers. This section will list the most popular set-ups today.

First is the fish-only tank. Due to its size, the 5-gallon fish tank is great for those who want to keep a particular breed or fish species.

Just remember that you can only allocate 1 inch of fish per gallon. Hence, if the fish grows to be an inch, then you can only keep five. This is to make sure the fish will not outgrow the fish tank or have limited space.

There are a lot of small and dwarf fishes such as puppers, killifish, bettas, fighter fishes and the like. These fishes may be small, but they pack a lot of personality and are quite beautiful to look at.

Another set-up is the shrimp or snail tank. In a 5-gallon tank, you can add around 1-2 snails or 5-7 shrimps.

Some small species include dwarf crayfishes, microcrabs, assassin snails or Nerite snails, ghost shrimps, cherry shrimps, etc.

Lastly, you can also have a plant set-up. With this, you can have your own underwater paradise. Some plants you can add are dwarf hairgrass, java fern and moss, anubais nana, etc.

Of course, you can always combine and add all of these together. Just make sure to familiarize yourself with the different species and know their temperaments and diets.

An example of a mixed tank set-up is one male betta fish, a nerite snail, a ghost shrimp and some Java Fern or Anacharis for the plants.

Why Do You Need 5 Gallon Fish Tank?

A 5-gallon fish tank is suitable for those who are passionate about fishkeeping, but have limited space to do so. With their small size, you can squeeze this tank into almost any space. However, smaller fish tanks require more care and maintenance compared to the larger ones.

A 5-gallon fish tank is also recommended for those who want to have a nano set-up. One has the option to do a betta tank, a shrimp or snail tank, or a planted nano tank.

Of course, there is also nothing stopping you to combine all of these together. It’s okay to combine these species in one biome since they have small bioloads.

Just make sure to know the temperaments of each fish/shrimp/snail you are keeping and make sure not to combine predators and preys together.

For fish, you can add bettas or killifishes in your tank. Or if you are fonder of invertebrates, then you can add all kinds of dwarf shrimp species. You can also add dwarf crayfishes, but do choose the smaller species. You can also include some Thai microcrabs, Nerite snails or assassin snails.

A small 5-gallon fish tank is also recommended for breeders. This small space is a cheap and great way to breed fishes. Moreover, once you are done breeding, you can always use this space to rear the pair’s offspring until they get big enough to transfer to the other tank.

Frequently Asked Questions

FAQs-fishHow many fish in a 5 gallon tank?

This question can also be the same question you have in mind right now. At the very least, you can fit an inch of fish for every gallon of water.   So for instance, you might not want to fit a large fish in a small tank like a five-gallon one.

For this reason, you should also determine the full size of an adult fully-grown fish; know if it will be comfortable living in a small tank.  Will it not be stressed if movement is much limited due to space constrictions?

In addition, you should think about the water quality.  A small tank can easily be polluted and toxic. It is understood that many fishes and plants will have harmful effects.  More plants and tank friends also mean more frequent cleaning. Nevertheless, consider these things and follow the rule that commonly also applies to betta fish and other small fish breeds.

What fish can live in a 5 gallon tank?

If you want to keep fish or small fish in general, get yourself a five-gallon tank. It is the smallest sized tank that you can start with; however, it can also be contaminated fast because of factors like limited water amount.

For this reason, you must select the right fish to add.  So the question, what are the best fish to live in this small tank? Some of them include,

  • Honey Gourami
  • Betta Fish
  • Endler’s Livebearer
  • Least Killifish
  • Crystal Red Shrimp
  • Dwarf Crayfish
  • Clown Killifish
  • Vicro Rasboras
  • Dwarf Frog
  • Rosy Loach

How much does a 5 gallon fish tank weigh?

This tank weighs 7 lbs if empty and 62 lbs if filled.

Where to buy 5 gallon fish tank?

You can buy this small tank in fish supplies stores and pet stores, too. But for amazing deals, you might want to get yours from online marketplaces like

Here, you can find a wide range of selection by the manufacturers themselves and at affordable prices.


Finding the best 5 gallon fish tanks can be easier with knowledge of the top picks in the category.  In this way, you can compare different products along with their pros and cons.

And referring to the buying guide with the factors to consider, you can determine the special qualities to check in every item you’re comparing.

Using what you learned from them, you can make a better decision. With the right fish tank, you can get started setting up your small tank with the equally small fish and the right aquarium equipment. Buy a five-gallon fish tank and enjoy your new hobby today!




3 thoughts on “The Best 5 Gallon Fish Tanks for 2021”

  1. I bought the Koller Products Panaview 5 gallon Aquarium Kit for my little girl last year and so far, so good. The price is reasonable and it is very suitable for those who are looking forward to save some cash. The best thing that I and my kid like most about this product is the beauty of the aquarium when we turn on the led light. It is really nice but the filter of this tank can get really noisy. Anyway, it still performs quite admirably.


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