Best 5 Tetra 20-gallon Aquarium (Tank) For A Lot Of Fishes

If you need a bigger tetra 20-gallon aquarium for your living room but you’re not sure which one to pick?

You’re at the right place.

We do some research and picked the best 5 models for each category, so you can check all details and choose the one you like the most. Read our guide at the end for more tips before shopping.

Best 5 Tetra 20-gallon Aquariums

BEST OF BEST TETRA 20-GALLON AQUARIUM

Tetra ColorFusion Aquarium

Minimalist Design
If you prefer rectangular models that have included equipment, this Tetra model is one of the most popular on the market. Minimalist design goes well with any style, so you can place this model in every corner.

Sturdy Construction
The aquarium is made of thick glass which has great transparency. It is strongly siliconized on the corner and has a silicone bottom which will prevent bumps and the possibility of sliding.

Multiple Fishes
This tetra 20-gallon aquarium measures 27.88 x 16.13 x 20.38 inches, so you can place multiple tetras and other fish breeds inside. It will be beautiful if you’d place colorful plants inside which will create a real aquatic home for fishes.

Colorful Lights
Like similar 20-gallon betta tanks, this model also has a great filtration system so fishes can enjoy fresh habitats. LED lights have different colors, so you can change them at night. In the package, you will get a fishnet and samples for free.

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BEST CHEAP TETRA 20-GALLON TANK

Aqueon Long Aquarium

Easy Fitting
If you only need a new tank which you can combine with a smaller 1-gallon betta tank on a desk, this model is the perfect choice for multiple fishes. Simple design will easily match with rest home decoration.

Stable Construction
Sturdy tetra 20-gallon long tank fit on every stable stand commode with a measurement of 30.25 x 12.5 x 12.75 inches. The aquarium is made of thick glass so you don’t have to worry it will break easily.

Opened Top
Safety silicone in black color at the bottom and top of this tetra 20-gallon tank will prevent bumps and prevent any sliding. Because the tank has opened top you can easily feed your fishes on a daily basis.

Long Shape
Because of the long shape, your lovely fishes will have enough space for enjoyable swimming. We recommend adding plants and gravel for a better aquatic home. Additional equipment is not included.

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BEST DECORATION TETRA 20-GALLON AQUARIUM

GloFish Aquarium Kit Fish Tank

Unique Tank
If you’re searching for a similar neon tetra 10-gallon tank but much larger, this model is one of the best on the market. Even if it has a very simple design, the tank will definitely catch everyone’s attention.

Glass Design
The aquarium is made of sturdy glass construction and strongly siliconized on the edges so you don’t have to worry about leaking. It comes in a rectangular shape so you can place it in every corner of your house.

Easy Feeding
With a measurement of 27.88 x 16.13 x 20.38 inches, and you can place multiple tetra fishes inside as well as other fish breeds for marine application. This tetra 20-gallon aquarium has a hole at the top for easier feeding.

Colorful Plants
This 20-gallon neon tetra tank comes with an LED stick and colorful artificial plants which will provide better habitat. The aquarium is equipped with a filtration system for easy maintenance. Fishnet and free samples are included in the package.

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BEST WITH FILTER TETRA 20-GALLON TANK

Marina LED Aquarium Kit

Whole Setup
This model is a great choice for beginners and those who want to buy the whole setup which will save time with maintenance. Marina aquarium for tetras is made of sturdy materials so you can use it for many years.

Clear View
Like other 20-gallon community tanks, this model is also made of sturdy glass which has great transparency so you can always take a look and check your fishes. You can place this rectangular aquarium next to the wall.

Sturdy Stand
With a measurement of 30 x 18 x 22.3 inches and 35 pounds, this tetra 20-gallon aquarium tank needs to be placed on a sturdy stand that can hold the weight when it is filled with water.

Great Reflection
A powerful filter will purify water so your tetra fishes can have a clean and fresh environment. For best reflection, there are LED lights at the top of the hood. Free samples are included in the package. You will get a fishnet for easier catching, as well.

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BEST PLANTED TETRA 20-GALLON AQUARIUM

Aqueon Aquarium Starter Kit

Popular Model
This Aqueon aquarium is very popular for larger living spaces. It can easily be combined with small desk 3-gallon tetra tanks if you love fishes and want to create an aquatic home.

Silicone Bottom
Like other usual rectangular models, this tetra 20-gallon aquarium is also made of glass and it has a black silicone bottom to prevent bumps and sliding. You can place it on every sturdy stand in the corner of your house.

Add Decoration
This tetra fish tank 20 gallons measures 24.25 x 12.5 x 19.5 inches, and your tetra fishes will have plenty of place for swimming. Add decorative plants as well as coral reefs, so fishes can have a natural habitat.

Clean Environment
For easier feeding, the top lid has a hole so you don’t need to open it. When you need to clean the aquarium, there is a fishnet for easier catching which you will get in the package. For daily maintenance, a powerful filter will keep the water clean.

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How To Pick The Best Tetra 20-gallon Aquarium?

Picking a larger model is not an easy job, especially if you’re a beginner. In our guide, you will find all the important information about features that we think are most important when picking a tank.

Why You Need It? – Aquariums are great additional decoration in every home, they can easily fit and they are very durable. If you’re picking a bigger model like the one from our post, it will definitely catch everyone’s attention. Fishes don’t need much care as other pets, so an aquarium is a great choice if you don’t have much time with maintenance.

Sturdy And Durable – One of the main features is of course the durability of the construction. Check all details about the tank and pick a model that is made of high-quality. Larger models are made of acrylic and glass material. Make sure construction is thick enough so it won’t break easily. Also, it is important that the tank is strongly siliconized to prevent leaking.

Natural Environment – It is important to provide natural habitat to your fishes, including a filtration system as well as a great ecological system so your tetras can live in a healthy and clean environment. Add natural plants and gravel inside and decoration to fulfill the whole environment. Make sure tetras have optimal temperature every day.

Included Features – LED lights need to be part of every 20-gallon breeding tank as well as tetra models, so you can always have a great view. Powerful filters will save you time with maintenance. Many models come with a whole setup which includes, artificial plants, fishnet, and food samples. Check if the tetra 20-gallon tank has a hole at the top for easier feeding.