Best Small Fish Tanks with Buyer’s Guide

Last Updated on December 23, 2020 by Righteous Daddy (Rehan)

Disclosure: My content contains affiliate links, meaning “As an Amazon Associate I earn from qualifying purchases.”

There is something about aquariums that gives peaceful vibes, that calms your soul. Your tiredness just vanishes with one look at it. It is primarily a well-maintained aquarium with natural décor elements, lush aquatic plants, and, last but not least, the most important thing (or a creature) beautiful fishes. Only focusing on how beautiful and serene aquariums are, I almost forget that they need to be taken care of regularly; things can become challenging at times. But seeing how you have provided a healthy and beautiful home to your little friends is what makes everything worth it. Aquarium keeping is more than just a hobby now. It’s a lifestyle. Having Aquariums in your home, whether big or small, can be a therapy station.

Now is the time to bring your aquarium dream to life. Got a small space? No issues, there are tons of small fish tanks available in the market. But it can become a bit overwhelming to find the best one. That is why I did the hard part and compiled some of the “best small fish tanks” in this article for you.

Once you have decided on a fish tank, you are done with the most significant part. You have some time to ponder over the other necessary equipment (plants and ornaments), fish food, and the fishes themselves.

You will only find nano fish tanks in this article…

Coming back to Fish Tanks, they are available in different shapes and sizes. But I have compiled only the Nanos ones suitable for compact places; you do not have to give up on your aquarium dream if you don’t have a room for a big one. Fish tanks are also made out of different materials, which are mostly clear glass or high-quality clear plastic. Other than the shapes, sizes, and materials of a fish tank, many other smaller things in a fish tank makes a huge difference.

I am not trying to scare you with the complications of a fish tank; Luckily. I have not only added some of the best small fish tanks in the list but also added the infographic as well as text buying guide at the end of the list, which contains all of the essential features of a fish tank you should consider before finalizing your purchase. Furthermore, the pros and cons of each Fish Tank are mentioned to help with your decision. So, without further delay, let’s take a look at them.

Comparison of Small Fish Tanks



Marineland Contour Glass Aquarium Kit- Righteous Daddy Choice

I am starting off our list of best small fish tank with this sleek and modern design MarineLand Contour Glass Aquarium Kit. It is compact, making it an excellent option for small homes or small spaces and a desktop tank. The Marineland Aquarium comes in two sizes: 3 gallons and 5-gallon tank.

The clear glass makes the aquarium look so much better and lively, and the rounded corners are the perfect touch. It features everything from an LED light fixture to the filtrations system. I am further going to talk about this particular Fish Tank in the Features and Design portion.


Now, take a look at the features of this MarineLand Contour Glass Aquarium discussed ahead to see whether it meets your requirements or not.


The Marineland Glass Aquarium features a built-in filter. It is a 3-stage filter system with mechanical, chemical, and biological filtration, ensuring that the fishes will enjoy crystal clear water. And for a sleek look, the filter is hidden in the back wall of the aquarium. There is a water pump inside the filter for water circulation. Marineland Aquarium filter uses Rite-Size Z filter cartridges, removing particulate matter, colors, and odors for maximum clarity. Additionally, the filter includes Bio-foam to help in the biological filtration.

LED Lights

The Marineland Aquarium also features Blue and white LEDs, which are mounted in the attached light rail. It gives you the option of choosing between white and blue or even both. The Bright White LED, on the one hand, offers a shimmering sunlight effect. In contrast, the Blue LED gives a relaxing moonlight effect. Also, it enhances the colors of plastic plants, ornaments, gravel, and fishes.


This Marineland Contour Glass Aquarium is available in two-sized gallons, a 3-gallon tank or a 5-gallon tank mounted on a black pedestal.

What comes in a package?

You not only get the Aquarium itself, but the package also includes an energy-efficient LED Light fixture. A 3-stage filtration system plus a hinged glass lid makes feeding and cleaning easier.


Now, I will look at the design of this Marineland Contour Glass Aquarium.

Sleek Design

This Marineland Aquarium has a super sleek design; the rounded corners with clear glass canopy takes the viewing experience to another level. The glass canopy also makes this aquarium look bigger than it actually is, instead of making it look like a small box.

LED Light Rail

The LED light rail is the added feature, which makes it worth the investment. The sleek curved black rail blends in with the Aquarium, and it feels like it is a part of it.

Glass Top Canopy

Glass Top Canopy is the extra attention to detail every small aquarium needs because it allows viewing from multiple spots and makes the aquarium look bigger. And it is also functional and provides easy access for feeding.

Easy Access

The top part of the aquarium easily slides to feed the fishes. The filters can also be easily accessed from the top.


The overall dimensions of the Marineland Contour Aquarium measure 9. 5 inches (L) by 10 inches (W) by 10 inches (H) for a 3-gallon tank size.


This Marineland Contour Aquarium is, for sure sleek and small. Still, it does have a couple of things you should consider before finalizing this for your home, office, or anywhere else.

No Heater

This Marineland Aquarium does not come with a heater, it does have a space for it, but you will have to purchase it separately if you need one.

Non-adjustable Water Flow

The water flow from the filter is not adjustable; it would have been better to adjust it.

To help make your decision a little easier, I have added the pros and cons of this exceptional MarineLand Contour Glass Aquarium Kit below:

Things I Liked

Things I disliked

  • Clear glass with rounded corners and glass top.

  • 3-stage Hidden Filtration System.

  • LED light (white and blue).

  • Does not come with a heater.

  • Water flow from the filter is not adjustable.



Overall, The Marineland Contour Glass Aquarium is a sleek and stylish tank at a considerable price. It is packed with features; a 3-stage filter, LED lighting, railing, glass tank, and a glass top. No doubt, this is the best option for people looking for a small fish tank for desktop or other compact spaces. If you are looking for a sleek Aquarium with multiple viewing spots and a high-end look overall, this might be the best option. The other 5-gallon tank is also available for the same price range.

GloFish Aquarium Kit Fish Tank


Another excellent Fish Tank I am adding to the list is this GloFish Fish Tank. This one is an affordable option with a high-quality plastic body. It also has various other features which makes it a must-have for small spaces.


Now, let’s stop beating around the bush and come to the topic that actually matters, the GloFish Aquarium features.

LED Lights

LED lights really make the Aquarium look 10 times better, and that too when they are hidden. This GloFish Aquarium features Blue Hidden LED lights incorporated into the hood; Blue LED lights give the effect of moonlight. The hidden LED lighting situation is a cool feature that gives this Fish Tank a unique look.

Filtration System

The GloFish Fist Tank also features a filter that pushes the aquarium’s dirty water through the filter cartridge. The Filter Cartridge’s dense and dual-sided mesh then catches all the waste to clean the water.

Filter Size

The Fish Tank features a Medium size filter cartridge, providing with best possible results.

What do you get?

You do not only get the Seamless and Crescent-shaped tank, but the package also contains a black canopy with a feeding hole, Tetra Whisper Bio-Bag Filter Cartridge, and a cherry on top, and energy-efficient blue LED lighting.


Now, I am going to discuss a bit about the design of this GloFish Tank.

The Top

The Tank also comes with a top, which is a sleek black hood. The top not only finishes off the look but is also functional; it protects fishes from jumping outside of the tank and also reduces evaporation.


This GloFish 5-gallon Aquarium is a compact option and easy to put on top of small surfaces.

Sleek Design

The overall design of this Fish Tank is simple yet sleek. The Crescent shaped, seamless plastic aquarium looks perfect and can easily match your room.


This GloFish Aquarium tank is made with durable acrylic material. The Clear plastic canopy is not only sturdy but also looks good.


Now, I will talk about the drawbacks of this GloFish Tank ahead.

Not Easy to Clean

Although its unique shape makes it stand out amongst others, it might not be the easiest to clean whenever required; especially getting the corners.

Top Lid

They could have improved the design or quality of the top lid of this GloFish Aquarium.

These issues are not the deal breakers at all but might be an issue to some who are specifically looking out for these features.

I mentioned the pros and cons of this simple yet classy Aquarium Kit Fish Tank by GloFish, to help you decide whether this one is best suitable for you or not.

Things I Liked

Things I disliked

  • An ideal compact size.

  • Easy to put together.

  • Great design with amazing features.

  • It might not be the easiest to clean (because of the shape).

  • The top lid could have been better.



All in all, this GloFish Aquarium Kit Fish Tank is an excellent option for people who do not want to spend a lot of money. And also like a smart and classy home for their fishes. It is compact and easily fits on many tabletops.

Penn Plax Curved Corner Glass Aquarium Kit

Last but not least is the Penn Plax Glass Aquarium Kit. Ideal for people who prefer Glass material over other materials makes the fish viewing experience way cooler and better. Combining some additional features with its Sleek Glass look, this aquarium can be an excellent choice for small spaces.


Let’s take a look at the features of this Penn Plax Glass Aquarium.

LED Light

The added LED light makes the experience better during the night.


The body of this tabletop aquarium is made of glass, which allows a clear and wholesome experience.

What do you get?

The kit comes with a 10-gallon Glass fish tank, LED Light, internal cascade filter, mat, and a hinge style plastic lid.


I have talked about the design of this Penn Plax Aquarium ahead.

Unique and Sleek Design

To add to this Glass Aquarium’s beauty, it has a frameless and seamless design (unique bent glass) to eliminate any obstacles while viewing.


The cherry on top, it also has a sleek transparent lid which allows viewing from multiple dimensions.


The Aquarium is made with high-quality glass to ensure durability and clear viewing; with only 3-piece construction, the aquarium has rounded seamless front corners.


This 10-gallon tank measures 12 ⅝ inches by 11 3/4 inches and 17 ¾ inches, making it suitable for a wide variety of fish.


There are a couple of things that could have been improved design-wise, which I have mentioned ahead.

Plastic Lid

Although the plastic lid is transparent, it would have been better if the lid was made of glass. That would not only have given one look to the entire piece but also allow a similar experience from the sides and the top.

LED Light

The LED Light’s design could have been better; it does not blend in with the tank and just stands out as an extra piece. GloFish could have given more attention to the LED Light Design. LED Design of the other two Fish Tanks is much better.

These drawbacks are not deal breakers, just something to consider if you want your aquarium to look like one piece.

Following are the pros and cons of this beautiful Penn Plax Curved Corner Glass Aquarium Set that will assist you in your decision.

Things I Liked

Things I disliked

  • Durable and Sturdy Glass.

  • The design of this Aquarium allows for an immersive experience.

  • The Fish Kit is loaded with features.

  • The lid is plastic.

  • The LED Light design is not that appealing.



Overall, this Penn Plax Glass Aquarium is an excellent addition to anyone looking for an immersive and wholesome experience. The high quality and durable curved shape of the glass and the transparent plastic top adds up to make this one of the best small fish tanks available out there.


Choosing a Fish Tank is not as easy as it looks. You have to consider various things and ask yourself whether you are ready to give a clean and beautiful home to fishes or not.

They do not require a lot of attention, but you have to make sure that their tank is filled with clean water and fed on time. These are the few questions you should ask yourself before getting yourself into this aquarium hobby.

And if the answer is Yes, you should go ahead and invest in one of the fish tanks I have mentioned above. You also have to consider where you will put the fish tank because if you do not have enough space for it, you will want to consider purchasing small tanks. I have added some of the best small fish tanks and chose them after vigorous research.

Following are some of the essential factors I considered while selecting these small Fish Tanks. Before finalizing your purchase, take a look at these factors mentioned in the buying guide below. These will assist you through your purchase. For quick digestion of the buying guide, you can count on the infographic below as well.


The very first thing you have to consider is the size of the tank. Based on the space you have available for an aquarium, choose the size accordingly. Every tank comes with the dimensions in inches, so wherever you want to place it, measure the space beforehand. Along with size, you also have to consider the weight of the aquarium. Apart from the tank weight, the ornaments, filter, LED Lights, and water also weighs a lot.


Another vital thing to consider is the material of the tank. There are two types of most common materials in Fish Tanks: Glass and Acrylic. While Glass is a material that gives a high-end classy look. While Acrylic is excellent for beginners because it is 15 times more durable.

Glass body allows a more immersive experience and a clear view. However, Acrylic also allows a great view, but it is not as clear as Glass. But at the end of the day, it is your choice whether you want a clearer view or a more durable option.


To ensure that the water is clean at all times, Fish Tanks comes with a filter that takes dirty water from the tank, clean it, and then sends it back to the tank. Most of the small Fish Tanks already comes with a built-in filter. I chose the ones which come with a built-in filter to save you from the hassle. The built-in filters also provide water circulation, which helps to oxygenate the water.

LED Lighting

Lighting is also something you need to consider. It is not only great because it highlights the beautiful colors of fishes, allows you to have a beautiful experience in the dark. But it is also suitable for fishes and aquarium plants. LED Lights come mainly in two different colors: White and Blue. LED Lighting is a preferred aquarium lighting option, not only because they use less energy, but they also last longer and are safe for fishes. White LED Lights are similar to natural daylight, and Blue LED Lights gives an effect of moonlight.


Most of the small Aquariums come with a top that stops the water from evaporating or fishes to accidentally jump out of the tank. The top can be made of plastic or glass, which also protects the water from getting dirty. The top part either slides or has a hole on top to help feed the fishes with ease.


The fish tank design is also fundamental because they also function as a décor item other than being your therapy spot. I only compiled small fish tanks with a beautiful design that allows an immersive and wholesome viewing experience.


You obviously want your fish tank to be strong and durable so that it lasts a long time and stays your fish’s beautiful home for a long time. Although the glass Aquariums I mentioned in the list are durable. However, Acrylic Aquariums are the top choice if durability is your primary concern.


To conclude, I must add that fish tanks are, without a doubt, a great hobby. Although hobbies do give comfort and relaxation, aquarium keeping tops all other hobbies in terms of peace. There is something about water and fishes that eases your mind. Fish Tanks mentioned in the list above are all suitable for small spaces. They are packed with excellent features, making them the best in comparison to others in the market.


Righteous Daddy (Rehan)
Righteous Daddy (Rehan)

My name is Rehan, and I am the dad of one cute little boy. And I have got a very supportive and lovely wife. For a living, I write content. The best thing about me is that I love reviewing consumer products. And I founded this blog to share the list of best products, unbiased reviews of items, buying guides, how-to articles, and information.

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