Fish Tank Sizes: Everything You Need to Know


Sobat Penurut, if you’re in the market for a fish tank, choosing the right size is crucial. Not only do you want to ensure your fish have enough space to swim around, but you also want to make sure the tank fits in your home and budget. In this article, we’ll cover everything you need to know about fish tank sizes, including the benefits and considerations of different sizes, how to choose the right size for your fish, and more.

Benefits of Different Fish Tank Sizes

Before we dive into the different sizes of fish tanks, let’s take a look at some of the benefits of different sizes:

  • Smaller tanks are less expensive and take up less space.
  • Medium-sized tanks offer a good balance between space and cost.
  • Larger tanks provide ample space for fish to swim and grow.

Considerations for Choosing the Right Fish Tank Size

When choosing the right fish tank size, there are a few considerations to keep in mind:

  • The type and number of fish you plan to keep.
  • The amount of space you have in your home for the tank.
  • Your budget for the tank and accessories.
  • The time and effort you’re willing to invest in tank maintenance.

Fish Tank Size Chart

Tank Size (Gallons) Dimensions (inches) Number of Fish
10 20 x 10 x 12 1-3 small fish
20 24 x 12 x 16 2-4 small fish or 1-2 medium fish
30 36 x 13 x 16 3-6 small fish or 2-3 medium fish
40 36 x 18 x 16 4-8 small fish or 3-4 medium fish
55 48 x 13 x 20 5-12 small fish or 4-6 medium fish
75 48 x 18 x 21 8-15 small fish or 6-8 medium fish
100 72 x 18 x 20 12-25 small fish or 8-12 medium fish

Frequently Asked Questions

1. What’s the ideal fish tank size for beginners?

For beginners, we recommend starting with a smaller tank, around 10-20 gallons. These are easier to maintain and less expensive.

2. How many fish can I have in a 20-gallon tank?

You can have 2-4 small fish or 1-2 medium fish in a 20-gallon tank.

3. Can I keep a saltwater fish in a freshwater tank?

No, saltwater fish require a saltwater environment to survive.

4. What’s the minimum tank size for a Betta fish?

Betta fish require a minimum tank size of 5 gallons.

5. How often should I clean my fish tank?

You should clean your fish tank every 1-2 weeks, depending on the size of the tank and number of fish.

6. Can I keep different types of fish in the same tank?

Yes, but you need to ensure that the fish have similar water requirements and won’t attack each other.

7. Can I keep a fish tank in my bedroom?

Yes, but you need to ensure that the tank is properly maintained and won’t disturb your sleep.

8. How much does a fish tank cost?

The cost of a fish tank varies depending on the size, brand, and accessories. Smaller tanks can cost as little as $20, while larger tanks can cost several hundred dollars.

9. How much space do I need for a fish tank?

You need enough space to accommodate the tank itself, as well as any accessories and equipment. A 20-gallon tank, for example, requires at least 2 square feet of space.

10. Can I keep live plants in my fish tank?

Yes, live plants can help to oxygenate the water and provide a natural environment for the fish.

11. How long does a fish tank last?

A fish tank can last for many years if properly maintained and cared for.

12. Can I keep a fish tank in a room with no natural light?

Yes, but you’ll need to provide artificial light for the fish and plants.

13. What’s the best way to transport a fish tank?

You should empty the tank and remove any accessories before transporting it. Wrap the tank in blankets or towels to protect it during transport.


Nah, choosing the right fish tank size is an important decision that requires careful consideration. By understanding the benefits and considerations of different sizes, you can choose a tank that’s right for your fish, your home, and your budget. Don’t forget to regularly maintain your tank to ensure the health and happiness of your fish!


Mimin, we hope this article has been informative and helpful in your search for the perfect fish tank. However, we want to remind you that all of the information provided here is for educational purposes only. Please consult with a professional before making any decisions regarding your fish tank. Happy fish keeping!