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Home»Other Fish»Can Guppies Live In Brackish Water? Let’s Read to Catch the Answer!

Can Guppies Live In Brackish Water? Let’s Read to Catch the Answer!

Alex WayneBy Alex WayneSeptember 14, 2023

Guppies are among the most well-liked species in the pastime of keeping aquariums due to their vivid colors, energetic personality, and simplicity of breeding.

They are native to the tropical Caribbean and South American waters. Thus, you may wonder: Can Guppies live in brackish water?

It’s time to dive into this article to learn more about the suitable tank water conditions for your fish. Let’s scroll down!

Contents

  • 1 Can Guppies Live In Brackish Water?
  • 2 How To Prepare Brackish Water For Guppies
    • 2.1 Step 1: Select a brackish water-compatible tank
    • 2.2 Step 2: Fill the water
    • 2.3 Step 3: Mix the salt
    • 2.4 Step 4: Stir the water
    • 2.5 Step 5: Test the water gravity
    • 2.6 Step 6: Transfer water and fish
  • 3 What Fish Can Live In Brackish Water?
  • 4
    • 4.1 Are Guppies Freshwater Or Tropical?
    • 4.2 Can Guppies Live In Saltwater?
    • 4.3 Do Guppies Like Fast-Moving Water?
    • 4.4 What Is The Ideal Temperature And pH For Guppies?
  • 5 In A Nutshell

Can Guppies Live In Brackish Water?

The answer is Yes. While Guppies are freshwater fish, one of their natural habitats is brackish water, meaning they can develop well in this environment. 

Aquarists often use brackish water for their Guppies tanks because these aquatic creatures can live healthily in salt and freshwater. 

Freshwater assists these fish stay hydrated, while the significant salt content of brackish water might help preserve their pH balance in nature.

Moreover, this kind of water is ideal for the growth of guppy skin and muscles since it is moderately salty.

This water’s high mineral content promotes development, while its low acidity concentration keeps your fish comfortable and healthy.

Therefore, you can feel free to introduce Guppies to your home aquarium. They will undoubtedly be happy with any tanks featuring brackish water.

However, the salty water’s specific gravity should range from 1.0005 to 1.010. It would be best if you reduced this spectrum to meet your fish requirements. 

Can these fish tolerate salt? The good news is yes! Nevertheless, your guppies’ tank doesn’t require any additional salt.

While your fish may not suffer any issues, it is still a big concern if you keep other species in this tank. 

For instance, if you keep these creatures with snails in the same aquarium, avoid adding salt under no circumstances.

If you still want salt added to your tank, ensure all species can handle a higher salinity and use the right amount of salt.

Besides, carefully research the salt you plan to utilize. It should be marine salt, the type that experts recommend using. 

Guppy vs. brackish water

How To Prepare Brackish Water For Guppies

If you plan to move your fish from a freshwater aquarium to a brackish water one, here are some helpful guides to follow!

Step 1: Select a brackish water-compatible tank

Aquariums made of acrylic and glass are appropriate, but those with metal hoods, frames, thermometers, or any attachments are not due to corrosiveness. 

You also have a hydrometer to measure your tank’s gravity. Moreover, consider the number of fish you plan to keep. Buying an aquarium twice as big as the number of fish you want to keep is a decent general rule to follow.

Consider other factors such as width, depth, and height when choosing a tank. 

Select a suitable tank

Step 2: Fill the water

Use tap water to fill a big plastic bucket. If it’s chlorinated tap water, you must treat it before adding salt. 

Remember to leave enough space at the surface because the water will increase after you add other substances. 

Step 3: Mix the salt

According to experts, table salt and freshwater aquarium salt are not ideal for a brackish water tank. Instead, opt for marine salt.

Follow the manufacturer’s instructions when adding the appropriate amount of sea salt to prepare brackish water.

Mix the salt

Step 4: Stir the water

To ensure salt dissolves properly, stir the water. You may constantly stir for several hours, depending on the amount and temperature of the water.

You can allow the water to sit for around 20 minutes. After that, stir it again. 

Step 5: Test the water gravity

Ensure that you add the right salt concentration by measuring the water’s gravity with a hydrometer.

Brackish water’s density often varies from 1.003 – 1.010. However, the lower range is better for Guppies. Thus, you should adjust this scale if necessary.

Step 6: Transfer water and fish

Fill your tank with salt water. Pour gradually to avoid sprinkling. 

Before adding your fish, perform cycling the water in your tank. Also, check the water temperature, pH level, and gravity. 

Consider the following parameters to ensure your fish are happy and healthy:

  • Temperature: 78-82 °F
  • Hardness: 8-12 dGH
  • pH level: 6.8-7.8

Transfer the fish

What Fish Can Live In Brackish Water?

Are you looking for some species to keep in your brackish water tank? Below are some recommendations:

  • Catfish
  • Four-eyed fish
  • Black molly
  • American flagfish

If you bring all these creatures to your Guppies’ brackish water tank, you must ensure they can withstand the same tank conditions. 

While these creatures can live in the same tank environments, they may not get on well with each other. Therefore, you must check the compatibility among these species. 

Flagfish FAQs 

Are Guppies Freshwater Or Tropical?

These creatures are tropical freshwater species and live across South America, such as Barbados, Guyana, Brazil, Trinidad, and Venezuela.

Can Guppies Live In Saltwater?

The short answer is yes! Guppies may be able to survive in water that has up to 150% more salt than seawater, according to the evidence presented.

These creatures have an outstanding level of flexibility, enabling them to survive in various settings, including saltwater.

Do Guppies Like Fast-Moving Water?

The answer is no. The natural habitat of this species is slow-moving water. Also, these creatures may live in medium-level water flows.

What Is The Ideal Temperature And pH For Guppies?

The recommended water temperature for guppy aquariums should range from 72 to 82 degrees F.

Besides, these fish prefer pH values of 7.0 or above, like many other livebearers.

In A Nutshell

Can guppies live in brackish water? These tropical freshwater fish will grow happily and healthily in this water condition. 

However, you must know how to select the suitable salt and create a brackish water home aquarium for these creatures. 

Hopefully, you will be successful with our guides in preparing this tank for your fish. Thanks for reading, and see you in the next post

Alex Wayne
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Alex is a pet freelance writer and editor with more than 10 years of experience. He attended Colorado State University, where he earned a Bachelor’s degree in Biology, which was where he first got some experience in animal nutrition. After graduating from University, Alex began sharing his knowledge as a freelance writer specializing in pets.

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