3 Gallon Fish Tanks & Aquariums (Kits & more)

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A 3 gallon aquarium is a great size for anyone getting started with fish keeping, as it can hold a comfortable number of fish and can fit easily in most homes. It also leaves a little room for some plants and decorations, allowing you to add a little style to the tank too. Before we get into our full guide about 3 gallon aquariums, here is a quick overview of what the best tanks included in the guide are:


Best TanksSellerDisplaying products 1 - 5 of 21 results
Tetra CubeAmazonCheck Price
Marineland NookAmazonCheck Price
Glofish AquariumAmazonCheck Price
Tetra ColorfusionAmazonCheck Price
Marineland Contour Kit (Top Rated)AmazonCheck Price


And now for the full detailed guide:

Marineland 3 Gallon Nook Aquarium

Another Marineland aquarium, another funny name (Nook? Seriously?). What this fish tank lacks in name, it more than makes up for in functionality, design and ‘badassery’. Your fish will be having the time of his life in here, plus you’ll have room for decorations and ornaments if you like. Along with the fish tank, you’ll also get:

  • LED lighting system
  • Hidden filtration system
  • Adjustable flow pump
  • Made from plastic material
  • Black canopy

Tetra Fish Cube

Continuing our countdown of 3 gallon fish tanks, this is a slightly bigger Tetra tank than the globe that we’ve featured elsewhere on the site, so if you’re needing more room for fun things like decorations and other accessories then this should be perfect. This tank also comes with a handful of nifty features that will make it even more fun for your fish, including:

  • 3i filter to keep your fish healthy and safe
  • LED lighting system
  • Feeding hole

Tetra GloFish Aquarium Kit

GloFish make excellent products, and this Tetra 3 gallon aquarium kit is no exception. Aside from being colorful (and making the inside of the tank feel like a rave), the fish tank also has enough room for a few decorations and ornaments, plus it comes with a few extras, including:

  • Aquarium Light with Blue LEDs
  • Internal Filter
  • Medium Filter Cartridge
  • Aquarium Set-Up Guide
  • Dimensions – 14.6 inches x 8.8 inches x 11.2 inches

Tetra Half Moon Bubbler

This tetra tank is very similar to the other half moon aquarium in this post, except it has a built in bubbler! If you’ve seen Finding Nemo then you’ll know all about bubblers (remember the Dentist’s office?), but in case you haven’t seen that film, bubblers produce bubbles. That’s about it really. Luckily, the tank isn’t just all about the bubbler, it also comes with:

  • Color changing bubbler – not literally, but the LED gives it a cool color changing effect
  • Cartridge based filtration
  • Controller for the color changing

MarineLand 3 Gallon Contour Kit

Aside from looking really cool, this contour 3 gallon fish tank is full of extras that make it an awesome choice for anyone with smaller fish. The rail light feature is really cool and gives it a unique look too. You’ll also get:

  • Daylight and moonlight LED settings – creates a unique look 
  • Discreet 3-step filtration & adjustable flow
  • Filter pump
  • Filter cartridge
  • Easy access glass canopy (perfect for feeding time)
  • Dimensions – 12 inches x 12 inches x 12.5 inches

GloFish Half Moon Fish Tank

Another 3 gallon half moon aquarium! I think this shape is popular because it allows for quite a good view of your fish without leaving them totally exposed. This is another GloFish fish tank, so is similarly colorful like the other GloFish aquarium in this list. With the tank you get:

  • Blue LED bubbler
  • Air pump
  • Internal filter
  • Small filter cartridge
  • Clear canopy (perfect for feeding)

Kollercraft Betta Fish Bowl

Although we’ve included this Betta bowl in our 3 gallon list, it isn’t the most highly reviewed item that we’ve ever included. Most of the reviewers over on Amazon didn’t even realize that it would be made of plastic, which gives it a much lighter feel than they were probably expecting. However plenty of the reviews seem pretty happy with it, so it’s quite a good cheap option if you need something that’ll simply keep your fish happy. Here are the main features:

  • LED light unit
  • Impact resistant built
  • Samples of API Betta food
  • Dimensions – 11.00 inches x 11.50 inches x 11.00 inches

Kollercraft 3 Gallon Hex Fish Tank

Kollercraft are great at making fish tanks which are simple and safe, and this 3 gallon aquarium is no exception. The unique shape makes it great for getting a good view of your fish, and the wideness of the tank means you can easily include your own collection of decorations and ornaments if you like. The fish tank also comes with:

  • Internal filtration system
  • LED lighting

Hawkeye 360 Fish Tank

Aside from looking really cool (kinda like a rocket ship) and having a cool name (kinda like a jet fighter), this fish tank is pretty new to the market so is still fresh out the box in terms of reviews. It doesn’t come with much – just an aerator which keeps the water healthy.

Marineland Silhouette 3 Gallon Aquarium Kit

This is a very stylish aquarium kit with a huge amount of positive reviews on Amazon. Another great thing is that the seller on Amazon has answered loads of questions about the fish tank (more than 30!), so you can really do your research. Because it’s a kit, you’ll have everything that you need to get started with your new fish, including:

  • Hidden 3 stage filtration
  • Daylight & moonlight LED settings
  • Hinged canopy
  • Adjustable pump
  • Dimensions – 14.1 inches x 13.6 inches x 12.2 inches

Tetra Crescent Aquarium Kit

Even though this fish tank is also available in a 5 gallon variety, this is a list of 3 gallon fish tanks so we’re going to be talking about the relevant size! This is described as desktop aquarium, probably for 2 reasons; firstly, it’s likely to fit comfortably on most desks, and secondly because it has a cool little light at the top (which is sort of like a book light). We love this fish tank because it has over 200 reviews over on Amazon (and an average score of 4 out of 5 stars which is pretty awesome!). It also comes with:

  •  Cartridge filtration
  • 16 LED light
  • Whisper filtration
  • Dimensions – 14.6 inches x 8.8 inches x 11.2 inches

Aquatunes Aquarium

This fish tank was so weird that we felt like we should just add it for the fun (and because it’s also 3 gallons). I’m not going to pretend like it’s the best aquarium in this list, I mean it’s basically just a speaker and fish tank combined. However, it does have some pretty good reviews so it must be doing something right.

Elive Aquaponics Aquarium Kit

This is described as a ‘semi circle’ fish tank which gives you a clue on the shape. Aside from looking really cool (and having a plant poking out the top of it like a crazy hairstyle), there are a ton of very useful features that this aquarium has which make it an awesome choice, including:

  • Made from glass
  • Hidden LED lighting
  • Dual filter
  • Set up guide
  • Dimensions – 13.5 inches x 8.7 inches x 11.7 inches

Top Fin 3.5 Gallon Enchant Aquarium

Ok, while this isn’t strictly a 3 gallon tank, we thought we’d still include it (towards the end of the list) purely because it’s a good choice and it fits well in our list. Described as an ‘enchant’ aquarium (I guess because it’s magical or something?), this tank has an impressive score of over 4 stars out of 5 from more than 50 reviewers, so it must be doing something right. We have a similar tank on our 2 gallon page. Here is a quick rundown of the main features of this aquarium:

  • Made from plastic
  • Feeding door on hood for convenience
  • Color-changing LED lighting system
  • ‘Element’ filter
  • Available in black
  • Dimensions – 12 inches x 8 inches x 12 inches

Top Fin Aquaponics Desk Tank

Another Top Fin tank, another 3.5 gallon entry in what is supposed to be a 3 gallon list. But hey – it’s always better to get a tank that’s a little bit bigger for your fish than a little bit smaller, so a half gallon ain’t going to hurt one bit. This tank comes with a ‘planter’, which explains the crazy green hairstyle that it’s rocking in the image that we’ve selected. It’s also got other cool features, including:

  • Made from glass
  • LED
  • Pump
  • Average score of 4 stars
  • Dimensions – 10 inches x 9 inches x 10 inches

Aqueon Forge Aquarium Stand

Like all of our fish tank lists, we decided to end this 3 gallon countdown with a recommended stand. This is a highly rated stand (4 and a half stars from over 50 reviews) which would be a perfect match for your 3 gallon tank as it has a smaller lower shelf, and room for something larger on top (like a tv or even another fish tank!). Here are the main features of the stand:

  • 7 step set up
  • Reversible wood panels
  • Rust resistant coating
  • Dimensions – 28.5 inches x 18.2 inches x 5 inches
  • Weight – 15 pounds

A 3 gallon fish tank is just about the smallest size of fish tank or aquarium that we’ll ever recommend on FishTankBank, mainly because there are very few types of fish who would ever feel comfortable in a tank of this size. However, there are smaller species of fish who can live very comfortably in 3 gallons (like Bettas), so with this in mind we thought we’d create a list of the best 3 gallon aquariums and fish tanks we could find:

How much do the Tanked aquariums cost?

Tanked is a popular and awesome tv show, where large aquariums are built for some pretty interesting purposes. The tanks on the show aren’t just large though, usually they’re very large and completely custom builds. So when people are watching the show, often they wonder how much one of those tanks will cost.

The guys who produce the tanks from the show Tanked have their own website, but they don’t actually list prices on there – because every aquarium build they do is custom. However, it’s likely that due to their popularity they don’t work with clients for the show Tanked unless they’re willing to spend in excess of 5 figures for an aquarium ($10,000+).

So that’s how much an aquarium from Tanked costs! If you’re in the market for a large custom aquarium then we can build those too, feel free to get in touch with us today. 

Best fish for a bowl without a filter (3 options)

Typically a fish bowl without a filter is thought to only be suitable for snails, shrimps and other small creatures like that, rather than fish. But did you know that there are actually a number of types of fish that can live in a bowl without a filter perfectly comfortably? It’s true!

We decided to create this guide outlining all of the fish that can live in a bowl without a filter, so if you’re a beginner or you just want to add a bowl to your collection, you know what fish to use. Generally, it’s the more resilient types of fish who are best suited to living in a bowl without a filter – the types of fish who are not as susceptible to infections and can live in a wide range of environments due to their ability to adapt to different water parameters (known commonly as hardy fish).  Because bowls don’t have a filter, you often need to change the water daily to ensure the health and happiness of your fish. But by choosing hardy fish, you’ll reduce the risk of them getting ill or worse, dying in the bowl. Equally, you’ll want to go for smaller fish (that’s very obvious) but also cold water fish, as it’s difficult to attach a heater to a bowl so you’ll want fish that are comfortable in colder water. Let’s look at some types of hardy fish that would be ideal for a bowl without a filter:


Guppies are really easy to care for, and can comfortably live in a bowl without any need for filtration equipment. They’re small, coldwater and will very happily live with other guppies. If you have a small bowl (say 2 gallons), then the general rule of thumb would be 1 guppy per gallon.

Betta Fish

Betta fish are comfortable in smaller fish, but keep in mind that they can’t be kept together otherwise they will definitely start fighting!

Zebra Danios

This is a popular type of fish for beginners as they are very easy to care for and can easily remain healthy and happy in a bowl. They’re a freshwater fish so can live comfortably without heaters.


Hopefully this guide helps you decide what fish would be a good choice for a fish bowl without a filter. We’d always recommend that you choose a tank over a bowl, but if you’re a beginner then getting started with a bowl can be a great decision.


Best fish for 10 gallon tank

Stocking a 10 gallon aquarium can actually be quite difficult – you’ve got an awkward amount of space to fill, and you need to make sure that you’re choosing fish that will live well together. It’s not a huge amount of space either, so you’ll need to think about the size of the fish you’ll be putting in the tank, and how much room the fish will have in the tank to ensure that they’re healthy and happy.

With this guide, we want to help you figure out how you should stock your 10 gallon aquarium – we’ll be giving you advice on how many fish you should have, what types of fish and what fish are best for a tank of this size.

So let’s start with the most difficult question….

How many fish can you keep in a 10 gallon aquarium?

There is no straightforward answer here – it really depends on the type of fish you want to have, and what size they are. Our recommendation is to plan this very carefully. Don’t just think about what size your fish are now, think about what size they’ll be once they’re fully grown, and measure your 10 gallon tank carefully to ensure that your fish will still be able to live in it comfortably once they’re at their full size.

You should also think about how dirty the tank will be if you have more fish in it. So although you might be able to fit around 20 small fish in a 10 gallon aquarium, that will mean a lot of work in keeping the tank clean and it will also mean you won’t have as much room for fun things like plants and aquariums!

What are the best fish for a 10 gallon tank?

Ideally you’d want to choose smaller fish for a 10 gal – the main reason for this is that it’s not a huge amount of space in a tank like this, so the smaller the fish you choose, the more you can put into your tank. There are some obvious fish that you might want to include in the tank – a Betta fish, Tetras or Guppies are all ideal choices. However if you want some more interesting types of fish in your tank, you could easily add in some Corydoras, Sparkling Gourami or Killifish.

Hopefully this guide helps you choose the best fish when you’re stocking a 10 gallon aquarium!


The best fish for a 5 gallon tank

A 5 gallon aquarium is one of the more popular sizes that you’ll see in homes. It might not be a huge amount of space, but there is enough room to stock some pretty fantastic varieties of fish. The most important thing here is to ensure that the fish you’re stocking will have enough room to be healthy and happy, otherwise they’ll be at risk of infection or even worse, death.

So when choosing what fish to stick in a 5 gallon fish tank, it’s crucial that you choose wisely. That’s why we wanted to outline the best fish to include in a tank this size, and how many fish you should have in a 5 gallon aquarium. Before we get started with the list of fish options, let’s figure out how many fish we can have in a tank of this size.

How many fish can you put in a 5 gallon tank?

There is no one size fits all answer here (please excuse the pun). When considering how many fish you’ll put in your aquarium, you’ll have to think about the size that your fish will be when it’s fully grown, and whether or not it will still be able to live comfortably in 5 gallons. You could always move the fish to a larger tank once they start growing in size, but a good general rule of thumb would be to consider what size the fish in your tank will be when they’re fully grown, and if they wouldn’t still fit comfortably in the tank then either get a larger aquarium or get some smaller fish!


What are the best fish for a 5 gallon tank?

Now we’re getting to the fun bit! Deciding on what fish to put in your tank is where the real enjoyment is, and although 5 gallons is pretty small you should be able to have some pretty tropical and interesting fish in your tank. For example, the most obvious type of fish to have in a tank of this size would be Betta fish, as they’re small and colorful. But there are some other types of fish you might like to consider for a tank of this size:

  • White Cloud Moutain Minnow
  • Honey Gourami
  • Clown Killifish
  • Least Killifish
  • Various Micro Rasboras
  • Dwarf Puffer

If you wanted to combine some of these fish alongside some plants or ornaments, then there are a few different variations you could go for. Killifish are probably best kept with other Killifish only, but Bettas are good with most types of fish, and all of the fish we listed above wouldn’t mind a few ferns or moss balls in the tank for some extra plant life.

So that is our guide for stocking fish in a 5 gallon tank. hopefully you have enough information to get started!

“The truth about Blackfish” – when Seaworld responded to the Blackfish documentary

If you haven’t seen the Blackfish documentary, then you should really check it out. It shines a light on the treatment of animals, specifically orcas, kept at Seaworld and other similar water parks.

Since the documentary was released, it caused a huge amount of controversy on both sides of the argument – people disgusted with what they’d learned, and people picking holes in the claims and refusing to believe what they’d been told.

But perhaps the most interesting of all the responses was how Seaworld decided to address the claims, in a post titled “The truth about Blackfish”, which was published on their site (now deleted). Within this post they made some very interesting claims, including:

  • None of the scientists in the documentary have any experience with captive whales (despite Ken Balcomb appearing in the doc, the founder of the Center for Whale Research)
  • The trainers included in the documentary did not have sufficient credentials to speak authoritatively on the subject matter
  • Captive orcas live just as long as wild orcas

Interesting to note that the facts brought up in the documentary are still being debated to this day, but one thing is for certain – the documentary definitely provoked a lot of discussion.


If you’d like to read more about this, The DoDo did a great write up. 


Other posts:

75 gallon aquariums

100 gallon aquariums