Paradise Fish: Care, Tank Size, Tank Mate & More

The Paradise Fish is one of the most visually stunning and captivating species in the world of aquarium fish. These fish are popular among hobbyists and beginners with their vibrant colors and flowing fins.

However, before you rush out to purchase a Paradise Fish, it’s essential to understand their care requirements, tank size, and suitable tank mates.

In this blog post, we’ll explore all that and more, so you can provide the best possible environment for your finned friend.

So, let’s dive in!

Paradise fish background

Paradise fish, also known as paradise gourami, are stunning freshwater fish native to parts of East Asia. They are mainly found in areas close to Vietnam, the coast of China, and Korea.

These fish prefer shallow waters with plenty of vegetation, making them feel most at home in a tank replicating their natural environment. The fish possess a distinctive and mesmerizing look, characterized by their long fins that gracefully flow through the water when they swim.

They come in various color variations, such as blue and reddish-orange or a primarily blue hue. These fish typically blend and gradually fade toward the top of their head (usually adorned with spots).

The fish have vertical orange and blue stripes on their sides, which end at their fins. Their dorsal and anal fins are primarily blue with a few lighter stripes, and their tail fin is commonly orange with white borders.

A blue paradise fish is available, which has a distinct appearance from the usual blue and orange-colored fish. These fish are primarily blue with a subtle hint of orange, unlike the typical bright colors that match. The orange on the tails of these fish is more evident than on the rest of their body, but still not very bright.

Paradise fish are on the smaller side, reaching a maximum size of about 2.5 inches. While they are hardy and relatively easy to care for, their aggressive nature adds difficulty to owning them.

Providing ample space and carefully selecting compatible tank mates is essential to ensure their well-being.



Water temperature

Regarding the ideal water temperature for paradise fish, you’ll want to keep it in the range of 68-82°F (20-27.7°C). These fish tolerate a wide range of water conditions, making them adaptable to various environments. Some aquarists have even found that their paradises benefit from a slight temperature dip during winter.

However, it’s important to maintain stability in the water temperature and avoid sudden shifts outside of the recommended range. This can help prevent any potential health issues for your paradise fish. So, whether you’re keeping them in a tropical or sub-tropical setup, provide them with a comfortable temperature within their preferred range.

pH level

Maintaining the ideal pH level is crucial to caring for Paradise Fish. While they are hardy fish and can tolerate a wide range of water conditions, sudden changes outside the ideal range can cause health problems. Keeping their water pH levels between 5.8 and 8 is recommended to ensure their well-being.

Monitoring the pH levels in the tank and performing regular water tests are essential to keep everything running smoothly. Keeping the water stable and within the recommended range will go a long way in keeping your Paradise Fish happy and healthy.

By paying attention to their pH level, you actively ensure these stunning freshwater fish’s overall health and well-being.

Water hardness

Paradise gourami is a type of fish that can thrive in various water conditions. They are known for their hardiness and can adapt to different water hardness levels, ranging from 5 to 30 dGH.

These beautiful fish can bring life and color to any aquarium. They are easy to care for and can be a great addition to any fish enthusiast’s collection. Their adaptability to varying water conditions makes them a versatile choice for beginners or experienced aquarists.

Overall, the paradise gourami is a resilient and attractive fish that can enhance the aesthetics of any aquarium. Their hardiness and adaptability make them an excellent choice for anyone looking for a low-maintenance yet stunning fish to add to their collection.


Feeding paradise fish is an exciting task as they are not picky eaters. In their natural habitat, they consume a varied diet that includes insects, larvae, worms, small fishes, and various spineless species.

Providing them with a balanced diet that includes both artificial and live foods is essential in a tank. Flakes and pellet food can serve as a base for their nutrition, but it is crucial to incorporate protein-rich foods into their diet.

Bloodworms, brine shrimp larvae, and white worms are excellent choices for live food. Feeding them twice a day in small portions is recommended to prevent overfeeding.

By diversifying their diet, you can ensure that your paradise fish receive optimal nutrition and stay healthy.

Ideal tank size

Regarding the ideal tank size for Paradise Fish, a minimum of 20 gallons is recommended for just one fish. However, it’s always better to go for a larger tank if possible.

These stunning freshwater fish can grow up to 4 inches, so it is important to give them plenty of space to live comfortably. A larger tank provides more room for the fish and allows for necessary additions and decorations to create a natural and engaging environment.

Keeping multiple Paradise Fish together? You’ll need an even larger tank – at least ten gallons larger than the recommended minimum.

Providing ample space is always best for pets that tend to be violent towards their kind. Giving them more room to roam can go a long way in preventing any potentially harmful conflicts.

Tank maintenance

Proper tank maintenance is crucial for the well-being of your paradise fish. Regular cleaning and water changes will ensure a clean and healthy environment for your fish to thrive in. It is recommended to perform a 25% water change every week or a 50% water change every two weeks.

This will help remove any buildup of waste and toxins in the tank. It is important to monitor water parameters such as temperature, pH level, and ammonia levels to ensure they are within the optimal range for your fish. Regularly check and clean the tank filters. Keep an eye on the overall cleanliness of the tank and remove any uneaten food or debris.

By implementing these maintenance practices, you can provide a comfortable and safe habitat for your paradise fish.

Tank decoration

When decorating your paradise fish tank, it’s best to go for a natural look that mimics their native environment. These fish come from shallow freshwater areas with plenty of plants and vegetation, so incorporating live plants into your tank is a great starting point.

Plants like Java Fern, Dwarf hairgrass, and Hornwort provide shelter and security for your paradise fish. Dark-colored substrates like gravel or sand can add a nice contrast and make the colors of your paradise fish pop.

Remember to provide some hiding spots for your fish, especially if you have multiple males. Adding driftwood, rocks, or caves can create different territories and minimize aggression among the fish. With the right tank decorations, your paradise fish will feel at home and thrive in their new environment.

Compatible Tank Mates

Paradise fish are known for their aggression, so it’s crucial to choose fish that are larger than them and not aggressive. However, some larger, non-aggressive tank mates have been successfully paired with Paradise Fish, such as Bala Sharks, Bristlenose Plecos, and Synodontis Catfish.

These fish can coexist peacefully with paradise fish and thrive in similar tank conditions. It’s always a good idea to monitor the fish closely when introducing them to ensure compatibility and reduce the risk of aggression.

These fish can be downright nasty towards fish their size, often ripping at tails and even causing fatalities. As a result, it’s best to avoid keeping them with any fish that are similar in size or smaller. Aggressive fish should also be avoided as they will likely clash with the feisty Paradise Fish.

It’s always important to observe when introducing new fish to the tank and monitor their compatibility.

The optimal number of fish in a tank

Considering their aggressive nature, the optimal number of paradise fish to keep in a tank is essential. These fish are aggressive and prone to fighting, especially with their species. Therefore, keeping only one or a few paradise fish in a tank is recommended. Allowing at least 10 gallons of tank space for each fish will give them enough room to establish their territories and minimize their chances of aggression.

It’s also essential to monitor the behavior of the fish closely and be prepared to separate them if any signs of aggression become apparent.

By keeping the number of paradise fish in a tank at a reasonable level, you can ensure a peaceful and harmonious environment for these beautiful creatures.



Gender differentiation

Gender differentiation in paradise fish is relatively easy to determine. Males tend to be larger and have longer fins than females. They also have brighter and more saturated coloring, making them stand out in the tank.

Females, on the other hand, are smaller and have less vibrant coloring. It’s essential to distinguish between the genders, as keeping multiple males together can lead to aggression and fighting.

Aquarists can ensure a harmonious tank environment and prevent potential conflicts by understanding the visual cues and characteristics of male and female paradise fish.

Mating behavior

The mating behavior of Paradise Fish is quite fascinating to observe. When it comes to breeding, the male Paradise Fish takes on the role of constructing a bubble nest. He will carefully build this nest beneath some leafy plants in the tank.

Once the nest is ready, he will entice the female to approach by performing an elaborate courtship display. This can involve flaring his fins, vibrant color changes, and vigorous swimming patterns. If the female is receptive, she will signal her consent by swimming next to the male and showing off her vibrant colors.

After successfully mating, the female will need to be removed from the tank to protect her from the aggressive nature of the male. The male will guard the bubble nest and protect the eggs until they hatch. It’s truly a spectacle to witness the dedication and protective nature of the male Paradise Fish during the breeding process.

Fry care

Paradise fish eggs typically hatch within 24-48 hours after laying them. The hatch time may vary depending on the water temperature and other environmental factors. Once the eggs hatch, the fry will remain attached to the spawning site for a few days while absorbing their yolk sacs. After the yolk sacs are absorbed, the fry becomes free-swimming and requires food to survive.

At this point, the male betta’s protective behavior will start to subside, and the breeder must remove him to prevent him from eating the fry. The fry can be fed infusoria or newly hatched brine shrimp until they are large enough to eat other types of food.

Common Health Issues

Fin rot

Fin rot is a bacterial infection that can damage a fish’s fins and overall health. To prevent it, maintain good water quality, feed a balanced diet, and monitor your fish closely. Treat it promptly with antimicrobial medications to promote fin regrowth if it does occur.


Paradise Fish owners may encounter Ich, a parasitic infection that causes small white spots on the fish’s body, fins, and gills.

Medications can eliminate the parasite, but maintaining good water quality and minimizing stress in the fish can prevent recurrence. Regular water changes and a well-balanced diet will also improve overall health and reduce susceptibility to Ich.

Importance of responsible pet ownership and research.

To care for Paradise Fish, provide a suitable tank, maintain water temperature and pH levels, and feed them well.

Research their specific needs to make informed decisions and ensure their well-being.

This creates a harmonious aquarium experience for both you and your fish.