A goldfish swims near green plants in one of the best tanks for goldfish, making the clear aquarium a serene aquatic haven.

5 Best Tanks For Goldfish: Top Options For Happy Fish

Goldfish aren’t just pets; they’re a splash of life and color in your home. However, a common mistake is thinking any small bowl or tank will do for these finned friends. As an experienced aquarist, I can confirm that goldfish require ample space to thrive—not the tight confines they’re so often subjected to.

The right tank significantly affects their health, happiness, and growth, making it essential to choose wisely. The perfect abode is more than a water-filled box; it’s about creating a miniature world where your goldfish can flourish. A spacious 20-gallon minimum should be considered for these active swimmers—a fact often overlooked by new fish owners.

Ready to dive into the world of top-notch goldfish tanks? This article will guide you toward aquatic bliss for your gilded pals. Let’s explore together!

Factors to Consider When Choosing the Best Tank for Goldfish

Vibrant aquarium with goldfish swimming among coral and plants.

When it comes to creating a happy home for your goldfish, not all tanks are created equal. Selecting the perfect aquarium requires attention to detail and an understanding of your finned friends’ unique needs—from ample space for their playful antics to a filtration system that keeps their environment pristine.

Tank size

Goldfish need room to swim and grow. Follow the “six times the length” rule for a happy fish. This means if your goldfish is two inches long, aim for a tank that’s at least 12 inches wide.

As they grow bigger, so should their home. Start with 20 gallons for one goldfish and add another 10 gallons for each additional buddy.

A crowded tank can stress out your goldfish and make them sick. More water equals happier fish. Big tanks also keep water conditions stable, which is better for your pet’s health.

Water quality and filtration

Your goldfish’s health hinges on water quality and proper filtration. For a thriving tank, pair your finned friends with a filter that captures waste and keeps the water crystal clear.

Imagine it as their life-support system; a top-notch filter reduces disease spread and eases your maintenance routine. Regular partial water changes are non-negotiable for pristine conditions.

Choose wisely when selecting a water filter for your aquarium to ensure good water quality. Keep an eye out for models designed to handle the mess goldfish can make. A strong filtration system does wonders, working tirelessly between those crucial water changes you’ll be doing.

Tank material

Glass goldfish tanks are very common and won’t break your bank. They’re made to last and can hold up against scratches. You’ll find them heavier, which means they stay put well but can be tough to move. Glass also keeps a clear view of your fish for years without yellowing.

Acrylic tanks are lighter, so you can move them easily. They offer more shapes to pick from—not just the usual rectangle. But watch out—they scratch much easier than glass and cost more too. Over time, acrylic might turn a bit yellow, changing how you see your pets inside.

Aquatic plants

Live plants in your goldfish tank do more than just look pretty. They create a natural home and play area for your fish. Plants help clean the water by soaking up nitrates, which goldfish produce a lot of.

Consider adding Anubias or Java ferns to your tank. These plants are tough and can handle goldfish that like to nibble. Marimo Moss Balls are another great choice for goldfish tanks. Goldfish find them fun to push around but usually don’t eat them. Plus, they’re good at fighting off algae growth in the tank.

Tank mates

Just as plants add life to your goldfish tank, choosing the right fish friends is key to a harmonious aquarium. Hillstream Loach and Dojo Loach blend in well with the calm world of goldfish.

They’re peaceful by nature and won’t disrupt your goldfish’s slow-paced life. Platies are another excellent choice; they thrive in the cooler water that goldfish prefer. Bristlenose plecos also make ideal roommates because they’re small and help keep the tank tidy.

For a touch of variety, Giant danios can be lively yet compatible pals if you have enough room for everyone to swim freely. White Cloud Mountain minnows share the love for similar water conditions as goldfish, making them great additions too. Corydoras Catfish round out this list perfectly as bottom dwellers who scavenge leftovers, helping maintain cleanliness in your aquatic home.

Best Tank Options for Single Goldfish

Quick Recommendation

Comparison Table

Here is the comparison table without the price column:

Tetra BubblingPenn-PlaxbiOrb ClassicKoller AquariumTetra LED Cube
📷Tetra Bubbling LED Aquarium Kit 1 Gallon, Hexagon...PENN-PLAX Spongebob Squarepants Officially Licensed...biOrb CLASSIC 30 Acrylic 8-gallon Aquarium with White...Koller Products Plastic 6-Gallon AquaView 360 Aquarium...Tetra LED Cube Shaped 3 Gallon Aquarium with Pedestal...
Volume1 Gallon0.7 Gallon8 Gallons6 Gallons3 Gallons
ForSmall SpacesBettasDecorTropical FishBettas

1. Tetra Bubbling

Tetra Bubbling LED Aquarium Kit 1 Gallon, Hexagon...

Ideal Hexagon Aquarium with LED Lights for Lively Betta Fish


  • Modern hexagonal shape for a unique look.
  • Clear acrylic material to watch your fish clearly.
  • Light and easy to move at just 1 kilogram.
  • Holds 1 gallon of water, perfect for small fish.
  • Made by Tetra, a trusted brand in pet supplies.
  • Comes from China with a model number 29040 – 00.

The Tetra Bubbling LED Aquarium Kit stands out with its eye-catching hexagon shape and color-changing light disc. This 1-gallon tank is the perfect starter set for aquarium enthusiasts, offering a unique view from every angle. Its air pump keeps water moving and powers the included Tetra Whisper Internal Power Filter, ensuring your aquatic pets live in a clean environment.

The Tetra Bubbling LED Aquarium Kit enhances room decor and provides a healthy habitat for small finned pals. It’s why we consider it top-notch for creating a happy home for petite goldfish varieties, giving them style and comfort in equal measure.


PENN-PLAX Spongebob Squarepants Officially Licensed...

Ideal for SpongeBob Fans Wanting a Quirky, Safe Fish Home


  • Comes with a colorful SpongeBob Jellyfish Fields background and Pineapple top cutout for fun underwater adventure.
  • Designed especially for Bettas, providing a suitable habitat for this specific fish species.
  • This durable tank is made from high-quality plastic material, ensuring long-lasting use.
  • The rectangular shape measures 4 x 12 x 7 inches and holds up to 0.7 gallons of water – perfect for small spaces.
  • Features modern multicolor styling that adds a playful look to any indoor space.
  • Proudly made in the USA by Penn-Plax, known for crafting reliable pet products.

The PENN-PLAX SpongeBob SquarePants Betta and Goldfish Tank is an officially licensed aquarium that is a hit for kids and SpongeBob fans alike. The handy water release cap on this aquarium makes changing water a breeze—goodbye siphon hoses and messy spills! The PENN-PLAX tank is crafted from durable, scratch-resistant plastic. If it were ever to break, it would do so safely compared to traditional glass tanks—no need to worry about sharp shards!

3. biOrb Classic

biOrb CLASSIC 30 Acrylic 8-gallon Aquarium with White...

Stylish 8-Gallon Aquarium with Advanced Filtration System


  • The biOrb Classic comes in black with LED lighting to make your fish look great.
  • It has a round shape and holds 8 gallons, perfect for small spaces.
  • Made from strong acrylic, it’s lighter than glass tanks.
  • It’s designed for indoor use to keep your fish happy and active.
  • Includes special features like an aquarium kit to start right away.
  • Comes from GeoGlobal, first available on January 10, 2020.

The biOrb Classic is a sleek, modern twist on the traditional fishbowl. Picture this: an 8-gallon acrylic sphere that’s stronger and clearer than glass—a real eye-catcher for your tabletop.

4. Koller

Koller Products Plastic 6-Gallon AquaView 360 Aquarium...

Experience Crystal-Clear View and Daily Light Shows for Fish


  • The Koller is a cylindrical fish tank that holds up to 6 gallons, perfect for various small aquatic pets.
  • Designed for use with ornamental shrimp, betta fish, and tropical fish, making it versatile.
  • It includes features like improving sleep and reducing stress levels to enhance your wellbeing.
  • Comes with an easy-to-follow User Set Up Guide which makes starting your aquarium simple.
  • Made of durable plastic material by Koller Products in the USA ensuring quality craftsmanship.
  • The product dimensions are compact at 11.5 x 11.5 x 19.5 inches, weighing only 4.5 pounds.

The Koller Products Plastic 6-Gallon AquaView 360 Aquarium Kit stands out with its crystal-clear clarity. Your tropical or betta fish will shine through this sturdy plastic tank, as clear as glass but without the risk of shattering. Imagine your colorful fish against this pristine backdrop—a sight to lift anyone’s mood!

5. Tetra LED Cube

Tetra LED Cube Shaped 3 Gallon Aquarium with Pedestal...

Ideal Small Aquarium with Filter for Healthy, Vibrant Goldfish


  • The Tetra LED Cube holds 3 gallons of water, perfect for small fish.
  • It’s a lightweight cube-shaped tank that’s easy to move around.
  • Made of clear plastic, you can see your fish from all sides.
  • This aquarium kit comes with LED lighting to brighten up the tank.
  • Its dimensions are 10.32 x 11.95 x 17.5 inches, making it a compact size for any room.
  • Designed specifically for active fish with plenty of space to swim.

The Tetra LED Cube shines in the world of small aquariums. Its 3-gallon volume makes it ideal for fish enthusiasts starting their aquatic journey or looking to showcase a lone betta or goldfish. This tiny titan packs a punch with its energy-efficient LED lights, turning your fish into the stars of any room. Size-wise, it’s a gem at just 10 inches all around—perfect for tight spaces.

Ideal Tanks for Multiple Goldfish

Colorful goldfish swimming in a vibrant aquarium with plants and rocks.

Discovering the perfect habitat for a social school of goldfish isn’t just about upsizing—it’s about creatively tailoring their environment to promote active swimming, exploration, and peaceful cohabitation.

Tank size requirements for multiple goldfish

Keeping goldfish happy means giving them enough room to swim and grow. For each additional goldfish, you need more water. Start with a 30-gallon tank for multiple small fish. As they get bigger, prepare to move them into a larger space.

Swimming space and hiding spots

Goldfish love to swim, and they need plenty of room. For more than one goldfish, choose a big tank with lots of water volume.

Give them places to hide too. Goldfish aren’t shy, but they do like spots where they can take a break out of sight when they feel like it. Use plants and decorations for hiding spots in large aquariums with other friendly fish or just their goldfish pals.

Compatible tank mates for multiple goldfish

Creating a multi-fish setup is not just about space; it’s also crucial to choose the right fish friends for your goldfish. Hillstream Loach and Dojo Loach blend in well with the calm world of goldfish.

Water quality maintenance

Keeping goldfish in a clean home is key to their happiness. Make sure you have a strong filter that can handle the waste your fish produce. Goldfish are messy, so the filter will keep the water clear and safe for them to swim in.

Special Considerations for Fancy Goldfish Tanks

When it comes to fancy goldfish, they’re not just your average swimmer; these aquatic aristocrats have unique needs that demand special attention. Their delicate fins are like flowing gowns that require the perfect tank conditions to keep them healthy and elegant—let’s dive into how you can create a regal home for these finned beauties.

Tank size and water quality for fancy goldfish

Fancy goldfish need special care, starting with their home. Give them plenty of space with a 20-gallon tank minimum. This large tank helps manage water quality, which is crucial for these sensitive swimmers.

Suitable tank accessories and decorations

Having the right tank size and water quality is just part of keeping your fancy goldfish happy. They also need a safe, comfortable home with the right accessories. Soft substrates are important for these fish.

Preventing damage to fancy goldfish

Choose smooth decorations and soft plants for your fancy goldfish’s home. This helps stop their delicate fins from getting torn or hurt. Look for decor with no sharp edges, and pick live plants that are gentle on their tails, like java ferns or anubias.

Regular grooming and maintenance

Fancy goldfish need special care. You must keep their tanks clean and the water fresh to help them stay healthy. Think about how a bigger tank needs less cleaning and makes for happier fish.

Tanks for Coldwater Fish and Tropical Fish

Navigating the world of aquariums can be a bit like finding the perfect climate for your vacation—get it wrong, and your finned friends might not enjoy their stay.

Tank temperature requirements

Goldfish need their water just right, not too hot and not too cold. Think of it like the perfect porridge temperature for happy swimming! Keep your goldfish tank between 68° and 76°F to hit that sweet spot.

Keeping goldfish and tropical fish in the same tank

Mixing goldfish with tropical fish may seem like a fun idea. They can add variety and color to your tank. But it’s not that simple. Goldfish need cooler water, while tropical fish like it warm.

Suitable tank sizes and setups

Thinking about tank sizes, coldwater goldfish and tropical fish have different needs. Goldfish are happiest in tanks that follow the ‘six times the length’ rule to make sure they have plenty of room.

Maintaining the ideal tank temperature and water conditions

Keeping the right temperature for your fish is simple with an aquarium heater. Set it between 75° and 80°F for tropical fish, making sure to stay within this range. For goldfish who like cooler water, aim below 70°F.


Whether you’re a seasoned aquarist or just embarking on your fish-keeping journey, choosing the right tank is crucial to ensure your goldfish thrive. Consider factors like tank size, water quality, filtration, and compatible tank mates.

Remember, a bigger tank means healthier and happier fish. Start with at least a 20-gallon tank for a single goldfish, and add 10 gallons for each additional fish. And don’t forget about the importance of a strong filter that can handle the waste your fish produce.

With the right care and a suitable environment, your goldfish will bring color, life, and joy to your home for many years to come.


What size tank is best for a goldfish? 

A single goldfish thrives in a goldfish tank that’s at least 20 gallons, but if you’ve got room, go for a 55-gallon aquarium kit. Larger tanks like these give your pet more space and make keeping the water clean easier.

Can I keep my goldfish in a fish bowl? 

Fish bowls aren’t the best choice for your pet goldfish because they’re often too small for the fish to grow well and don’t support healthy gas exchange for their gills. Opt instead for larger aquarium tanks with proper filtration.

Do I need special lights in my goldfish aquarium? 

Goldfish enjoy having an LED light in their home; it mimics natural sunlight and can help live plants grow if you have them. Plus, LED lighting is energy-efficient!

What’s better: glass or acrylic aquariums? 

Both glass and acrylic aquariums have good points! Glass tanks are tough against scratches and usually cost less, while acrylic ones are lighter and can be clearer than some types of glass.

How do I start an ideal nitrogen cycle in my new tank? 

To kick-start the nitrogen cycle before adding any freshwater fish – including comet or common goldfish – add ammonia sources slowly then test your water regularly to monitor NO3- levels until they balance out.

Should I consider getting more supplies than just a tank for my betta or other freshwater pets? 

Totally! Consider grabbing items like water conditioner to treat tap water, enough fish food — maybe even flakes tailored to their diet — and decorations that mimic zoos full of marine life will enhance your aquatic friends’ environment big time.

Last update on 2024-06-17 / Affiliate links / Images from Amazon Product Advertising API

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