Last updated: 16/10/2022

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Welcome to our big goldfish bowl test 2022. Here we present all the goldfish bowls that we have tested in detail. We have compiled detailed background information and added a summary of customer reviews on the net.

We would like to make your purchase decision easier and help you find the best goldfish bowl for you. You will also find answers to frequently asked questions in our guide. Furthermore, you will also find some important information on this page that you should pay attention to if you want to buy a goldfish bowl.


  • Goldfish are schooling fish that like to hang out with other fish. Accordingly, they need larger aquariums.
  • A goldfish bowl should be angular and not round so that the goldfish can orientate themselves and have variety when swimming.
  • The decoration should also be adapted to goldfish to promote their health and well-being.

The Best Goldfish Bowl: Our Choices

Guide: Questions you should deal with before buying a goldfish bowl

Which fish are suitable for a goldfish bowl?

Whether goldfish, Siamese fighting fish, guppies or water snails – they are all suitable for a goldfish bowl. Whether this is healthy for your fish, however, is questionable. That is why many prefer to use a square goldfish aquarium instead of a round goldfish bowl.


Not only goldfish, but also fighting fish, water snails and guppies can be kept in a fishbowl.(Image source: / wnk1029)
Caution: Always remember that a fish is a living creature and not a decorative object.

Basically, goldfish belong to the so-called schooling fish. In order to survive longer, the company of other fish is important. You should therefore keep at least two to three goldfish in your goldfish bowl.

What does a goldfish bowl cost?

The price of a goldfish bowl can vary greatly. It already starts at 10 Euros. Far more complex and better equipped fishbowls and aquariums, which are also available in different shapes, can cost up to 70 Euros. A larger and professional aquarium, on the other hand, costs around 50 euros to 150 euros.

Type of aquarium Price
Goldfish jar 10 – 70€
Goldfish aquarium 50 – 150€

What are the alternatives to a goldfish bowl?

Many people are convinced that a round goldfish bowl is cruelty to animals. Accordingly, there is the option of buying an aquarium for goldfish.

This is larger, rectangular and can be set up appropriately for the species. Larger nano aquariums are also suitable for those who have a little less space available.

Decision: What types of goldfish jars are there and which is the right one for you?

Basically, we distinguish between these types of goldfish tanks:

  • Goldfish bowl
  • Aquarium for goldfish

In the following, we explain the different types and their respective advantages and disadvantages. In this way, we want to help you find the goldfish bowl that suits you best.

What distinguishes a goldfish bowl and what are its advantages and disadvantages?

A goldfish bowl is characterised by its round shape. It usually has a diameter of 25 cm. Around 15 – 30 litres fit inside. A goldfish bowl is a good decorative idea that takes up little space.

  • Serves as decoration
  • Little space
  • Easy to care for
  • No accessories
  • No species-appropriate husbandry

Goldfish jars are mainly known through films. In reality, keeping a fish in a goldfish bowl is rather discouraged. Goldfish need much more space than they seem to and usually live in groups.

The round shape of the glass is even considered cruelty to animals, as the fish can only swim in circles. Filters, heaters and plants are rarely used in a goldfish bowl because of the shape.

What distinguishes an aquarium for goldfish and what are its advantages and disadvantages?

Aquariums for goldfish can be bought in a wide variety of sizes. However, they are almost always rectangular. This has the advantage that there is room for several fish and they can orient themselves around the corners instead of just swimming in circles. Even accessories such as plants, filters and pumps find their place in an aquarium for goldfish.

  • Species-appropriate keeping
  • Various sizes
  • Accessories possible
  • Plenty of space
  • Intensive care and cleaning

As beneficial as a goldfish aquarium can be, it also entails more work. A fully equipped aquarium needs a lot of care and cleaning – despite water filters and pumps.

Moreover, due to their size, they do not fit into every flat. Nevertheless, if you want to do something good for your goldfish, choose an aquarium.

Buying criteria: You can use these factors to compare and evaluate goldfish bowls and aquariums

n the following, we will show you which criteria you can use to compare and evaluate goldfish tanks. This will make it easier for you to get an overview and decide on a suitable and effective model.

In summary, these are the following criteria:

  • Size
  • Decoration
  • Water plants
  • Water filter

In the following, you can read about the respective criteria and find out why it makes sense for you to purchase a model based on the criteria or not.


Basically, an aquarium should be 100 cm long and contain at least 200 litres of water. Goldfish love movement and live in shoals. A typical round goldfish bowl is therefore usually too small. In addition, the larger the aquarium, the more stable the water values and the less work the aquarium requires.

A rule of thumb says: 10 cm of fish need 30 litres of water.

Small aquariums, so-called nano aquariums, which only contain around 12 – 30 litres of water, are also not suitable for fish, but only for small animals such as shrimps, snails and fighting fish. They are suitable for any table, shelf or chest of drawers.


The environment of a goldfish should be interesting and varied. Various aquatic plants, stones and a sandy bottom are minimal requirements for decoration.

Goldfish prefer little decoration. They are relatively large fish and poor swimmers, so they can swim more freely with fewer obstacles.

You can therefore place a medium-sized decorative object in the middle of the aquarium so that your goldfish can make good use of the space. Large roots, jugs and flower pots are ideal for a goldfish aquarium. These are good places for your fish to hide and retreat.

Aquatic plants

Real plants should not be missing in a goldfish aquarium. They promote oxygen and regulate the microorganisms in the water. Since goldfish like to dig up plants and nibble on them, special aquatic plants should be chosen: Waterweed, marsh pondweed and hornwort are particularly suitable for goldfish. It can be helpful if you place larger stones around the water plant to protect the roots from the goldfish.

By the way, the bottom of the aquarium for goldfish should consist of fine gravel or sand. These fish love to burrow. Coarse gravel is therefore unsuitable, as it tends to get stuck in the goldfish’s mouth.

Water filter

Goldfish are quite undemanding animals, which is why not many technical accessories are absolutely necessary. Basically, a medium strength filter system is absolutely necessary. Filters with a 3-stage filtration are best suited. Goldfish pollute the water a lot and a filter provides a regular supply of oxygen.

There are three different types of filters:

Filter Description
Suspension filter You can hang this filter on the edge of the aquarium. It channels water in and filters it out again. This filter is the most popular, also because of its low price.
Canister filter This filter is located under the aquarium and filters the water through a series of tubes. They are almost silent, but a little more expensive than a hanging filter. Canister filters are particularly suitable for large aquariums with 200 litres or more of water.
Wet/dry filter This filter uses an overflow box to filter out impurities. However, they cost much more than the other filters and are much larger. They only fit in aquariums with at least 200 litres of water.

Facts worth knowing about goldfish bowls

How do I set up my goldfish bowl?

To set up your goldfish bowl correctly, you will find a step-by-step guide below.

  • Location: First of all, you should think carefully about the location of the aquarium. If possible, it should only catch the light from its own lighting, as sunlight strongly promotes algae growth. At the same time, the aquarium should be in a safe place so that it does not fall down.
  • Substrate: The bottom layer is a 2 cm thick substrate. As this should not have any contact with the water, but is only suitable for the plants, you should spread another layer of 5 – 10 cm gravel or quartz sand on top.
  • Decorative elements: Decorative elements can be placed above the substrate as desired. These include, for example, stones and water plants.
  • Additional elements: Pump, lighting, filter and heating are also part of the basic equipment of an aquarium. They are set up before the water.
  • Water: Now you can start filling the aquarium with water. Pour the water over the palm of your hand at first so as not to stir up the sandy bottom.
  • Fish: The aquarium should now stand empty for about 10 days so that a cycle can develop that is species-appropriate for your goldfish. Only now can your goldfish settle in.

How do I change the water in my goldfish bowl?

Even if the water in your goldfish bowl appears to be clean, you should change at least 25-50% of the water every week. This will prevent the build-up of harmful ammonia and nitrates that goldfish produce.

  • First remove all artificial decorative elements and clean all sides with an algae brush or sponge.
  • Unplug the water filter and clean it as well as all decorative elements.
  • With the help of a so-called siphon, you can now suck out all dirt particles and change about 25% of the water.

Caution: do not take the goldfish out of the aquarium when cleaning. This will only cause unnecessary stress for the little fish.

What to do if the water in the goldfish bowl becomes cloudy?

Even if we change the water regularly and clean the goldfish bowl, something can go wrong and the water starts to get cloudy or turns yellow, green or white. Then it is essential to clean it again!

Each colour of the water indicates a different problem. One example is problems with algae, bacteria or rotten plant remains. This is usually solved by changing the water. This starts a new water cycle.

What water temperature should a goldfish tank have?

Goldfish are cold-water fish that do not have any major temperature requirements. A heater can therefore be dispensed with. The water temperature can easily be between 16 – 22°C. The pH value of the water should be 6.5 – 8.2 for your goldfish.

What other fish can my goldfish live with?

Goldfish are schooling fish, so you should keep at least 2 – 3 goldfish together in the aquarium. However, they do not mix well with other fish species. Goldfish are large animals that produce a lot of dirt. This in turn increases the ammonia content of the water, which is harmful to other fish.

Image source: / Pexels