Blue Gourami: Care, Lifespan, Sizewtank Mates

Are you looking for a freshwater fish that’s stunning and easy to care for? Look no further than the blue gourami! These beauties are a joy to own and will add color to any tank.

But before you rush out to buy some, it’s essential to do your research. Even low-maintenance fish can suffer if not given proper care. Don’t worry; this guide has covered everything you need to know about caring for blue gouramis.

We’ve covered everything, from tank mates to diet, size to lifespan, and breeding. So sit back, relax, and let us guide you on becoming a blue gourami expert!

Key Takeaways

  • Blue gouramis are easy-to-care-for freshwater fish with a lifespan of around 5 years in the right conditions and an average size of 5-6 inches for adults.
  • They are labyrinth fish that need access to the surface, prefer low water flow, and require filtration. They are also natural omnivores that accept most food products.
  • Blue gouramis can be territorial towards tank mates of different species, so it’s essential to choose tank mates of similar size and avoid smaller species and larger fish that can make them skittish.
  • They are egg-layers that like to produce bubble nests and should be bred in a separate tank with softer and slightly more acidic water. Clean oxygenated water is essential for developing their labyrinth organ, and recommended care guidelines and consistency are important for their well-being.

Species Summary


Also known as the three-spot gourami, this species (scientific name: Trichogaster trichopterus) is a hardy freshwater fish that adapts well to life in captivity.

Blue gouramis can be found in several Southeast Asian countries, inhabiting lowland marshes and swamps filled with lush vegetation. Their wide natural distribution makes them a popular choice for aquarium enthusiasts.

While not particularly demanding regarding care requirements, blue gouramis have a unique anatomy that requires a carefully planned and maintained habitat. But with some extra attention, these stunning fish will thrive in your tank and add a touch of beauty to your aquatic world.

Average Blue Gourami Size

When it comes to adult blue gourami, you can expect them to be around five to six inches in size. While females might be a tad larger than males, it’s not something you’ll easily notice.

If you want your fish to reach their maximum growth potential, give them the best care and diet possible. Purchasing blue gourami from reputable sellers can lead to better genes, which might ultimately impact their size.


As with most freshwater fish, the blue gourami’s lifespan is influenced by various factors, including water quality, diet, and environmental conditions. Under optimal conditions, these fish can live up to 5 years.

However, poor water quality, inadequate diet, and stressful environments can significantly reduce their lifespan. It is essential to maintain a consistent care routine and provide suitable habitats to ensure the longevity of these fish.

As blue gouramis age, they may exhibit changes in behavior, such as becoming less active or more territorial. It is crucial to monitor their behavior and adjust their care accordingly to ensure their well-being.


The blue gourami is an incredibly fascinating freshwater fish with its vibrant coloration and unique body shape. Its body is long and flat, with large, rounded fins and needle-like pectoral fins. The anal fin is extensive and eye-catching, making this species stand out from its gourami relatives.

However, its shimmering silvery-blue hue sets the blue gourami apart. The color can intensify during breeding times and reflect the fish’s mood. Upon closer inspection, you might notice subtle marbling with light blue shades and even a few specks of yellow on the fins.

You can easily spot this species by the two dark spots on its body; one is in the center, and the other is near the tail. Despite the name “three-spot gourami, “there are only two visible spots, as the third is, in fact, the fish’s eye!

It’s worth noting that distinguishing between male and female blue gouramis can be challenging. Females tend to have shorter, rounded dorsal fins, while males have longer, pointed ones. Females also appear fuller during breeding seasons.

Blue Gourami Care

Taking care of blue gouramis is a breeze! These freshwater fish are known for being low-maintenance and adaptable, making them an excellent choice for beginners. However, don’t get too comfortable – they still have unique needs and preferences you should know.

To ensure your blue gouramis are happy and healthy, here are some important care tips to keep in mind:

  1. Provide a spacious tank with plenty of hiding spots and plants for them to explore.
  2. Keep the water clean and well-filtered, as they are sensitive to poor water quality.
  3. Feed them a varied diet of high-quality pellets, flakes, and live or frozen foods.
  4. Maintain a consistent water temperature and pH level to prevent stress and illness.

By following these guidelines, you can enjoy the beauty and personality of blue gouramis without any unnecessary stress or complications.

Tank Size

If you’re considering keeping some young juvenile blue gouramis in your aquarium, a 20-gallon tank should suffice. Even a single adult blue gourami can live comfortably in the same size tank.

If you have an adult blue gourami, we recommend going for a larger tank that can hold around 30 to 35 gallons. These fish are active; a larger tank will give them more room to explore and swim around.

If you plan on keeping a pair or a group of blue gouramis, it’s best to go even bigger! Although they’re not the biggest fish, they love to explore, so they need more swimming space. So, if you want to keep these little guys happy, give them plenty of room to roam.

Water Parameters

Keeping blue gouramis healthy is easier than you might think! These fish are tough and can handle various conditions, but you must stick to the recommended water parameters. By mimicking their natural habitat, you’ll give them the best chance of thriving.

First, ensure your water temperature is between 72°F and 82°F, with 76°F being the ideal temperature. Keep the pH levels between 6.0 and 8.0, with neutral being best. Water hardness should be between 4 and 18 dKH. It’s also important to regularly check your tank’s temperature and water quality with a thermometer and test kit. This way, you can catch any changes before they become a problem.

You’ll be rewarded with happy and healthy blue gouramis by getting their environment just right. So remember to monitor those parameters and make any necessary adjustments. Your fish will thank you for it!

Setting Up Their Tank

These fish prefer slow-moving waters abundant in plant life, so you can have a lot of fun decorating your tank to match.

Start by using a dark-colored substrate, whether sand or gravel. This will help the vibrant colors of the blue gourami pop. While they tend to stick around the tank’s surface, a dark substrate can still make a big difference in their appearance.

In addition to the substrate, live plants are a must-have for your tank. Mix it with different species to create a more natural environment, but keep the surface relatively open. Blue gouramis are labyrinth fish, meaning they need access to fresh air. Don’t overcrowd the tank with floating plants, or you could risk depriving them of air.

Add rocks and driftwood to your tank to push that natural look. Keep the water flow relatively low, as these fish aren’t used to strong currents. Adding a few air stones can also help improve the oxygenation of the water.

While blue gouramis aren’t known for producing waste, a group can lead to a large bioload. Ensure your filter can efficiently cycle the tank to prevent the buildup of ammonia and nitrates.

Potential Diseases

Blue gouramis are excellent freshwater fish but prone to common fish diseases, and they can catch ich, a contagious parasitic disease. They can also suffer from skin flukes, fungal infections, Velvet disease, dropsy, and more.

But don’t worry, keeping your blue gouramis healthy is easy! Just maintain your tank correctly by checking the water conditions regularly and performing water changes as needed. Also, keep an eye on your fish’s color, as dull coloration can indicate metabolic stress caused by diseases.

If you notice blue gourami suffering from a disease, quarantine them immediately and provide over-the-counter medications to help them recover.

By following these simple tips, you can ensure your blue gouramis stay happy and healthy for years.

Food & Diet

Blue gouramis are omnivorous and can thrive on a varied diet consisting of live, frozen, and flake foods, making it easy for owners to provide adequate nutrition. The feeding habits of blue gouramis are very adaptable, meaning that they can easily adjust to new food sources.

They are not picky eaters and will consume almost anything offered to them. Their dietary requirements include high-quality flakes, pellets, and live or frozen foods like brine shrimp, bloodworms, and daphnia. Owners can also supplement their diet with fresh vegetables like spinach and lettuce.

It is important to note that overfeeding can lead to health problems like obesity and constipation. Owners should feed blue gouramis in small amounts several times a day instead of giving them large meals once or twice a day.

It is recommended to avoid consuming food stored for a long time as it may have lost its nutritional value.

With a well-rounded diet of high-quality foods, blue gouramis can be kept healthy and thrive in an aquarium environment.

Behavior & Temperament


Male fish tend to become territorial in aquariums, particularly in smaller tanks. Additionally, they may display aggressive actions towards females following mating.

Except for those small concerns, blue gouramis tend to be laid-back. They will investigate the aquarium and sometimes pluck at foliage to consume algae.

Observing these freshwater fish is easy as they typically remain near the tank’s surface and occasionally take gulps of air.

Tank Mates

Blue gouramis can be a bit territorial and might not get along with certain fish, such as dwarf gouramis, guppies, goldfish, angelfish, and bettas. So, to prevent clashes, it’s best to steer clear of these species.

Plenty of other fish are in the sea or aquarium. Consider tetras, loaches, danios, mollies, platies, barbs, and scavenger catfish if you want better options. These species are less likely to provoke aggressive behavior from your blue gouramis.

One more thing to keep in mind is to choose fish of a similar size to your blue gouramis. This will also help to minimize any potential tension among the fish in your aquarium. So, take your time and choose your fish wisely.


It can be captivating to observe the method of reproduction of blue gouramis. These aquatic creatures lay eggs and tend to build nests made of bubbles.

The ideal approach for fish breeding is to use a different tank, which allows for adjusting parameters to stimulate spawning. The new tank should have a comparable natural ambiance to the primary tank but with softer and slightly more acidic water.

If the circumstances are optimal, the male will construct a nest made up of bubbles. This can be observed as he exhales bubbles, forming a round structure atop the water’s surface.

He will swim back and forth to get the female’s attention, and after their mating ritual, the female will release her eggs, which the male will promptly fertilize. The eggs will float to the surface and gather in the bubble nest.

Once the female blue gourami has finished laying eggs, it should be removed. The male gourami can be left behind since it will take responsibility for caring for the eggs. The male will attend to the eggs and ensure they remain in the nest.

After approximately three days, the eggs will hatch. Once the offspring can swim, you can give them infusoria and nauplii (which are larvae of crustaceans) or powdered fry food.

Note from the author: It is important to replace the water regularly in the upcoming weeks as the labyrinth organ is growing. Keeping the water clean and oxygenated is essential.

Frequently Asked Questions

How can I tell the difference between a male and female blue gourami?

Distinguishing between male and female Blue Gourami can be done through their breeding behavior and color variations. Males have a long, pointed dorsal fin, while females have a shorter, rounded fin. During the breeding season, females show pronounced swelling, and both sexes display a deeper blue color.

Can blue gouramis live with other types of gourami?

Gourami compatibility depends on the species. Optimal tank conditions include similar-sized fish, thick vegetation, and soft, slightly acidic water during the breeding season. They can be territorial towards tank mates and may display aggressive behavior.

Do blue gouramis need a heater in their tank?

Yes, blue gouramis need a heater in their tank to maintain a water temperature between 72°F to 82°F, which is necessary for their well-being.

Can blue gouramis live in a community tank with other types of fish?

Blue gouramis can live in a community tank with similar-sized fish species, but caution should be taken due to their moderate aggression levels.

How often should I change the water in my blue gourami’s tank?

The frequency of water changes for a blue gourami tank depends on the tank size, number of fish, and filtration system. Regular water testing using water testing kits can help determine the appropriate water changing frequency for optimal water quality.


In conclusion, blue gouramis are a popular and easy-to-care-for species for aquarium enthusiasts. With their striking coloration and natural omnivorous diet, they can make excellent pets with the appropriate tank conditions, including live plants, a dark-colored substrate, and access to the water surface.

It is important to note that males can become territorial, so choosing the right tank mates is crucial for their well-being and avoiding skittish behavior.

Overall, blue gouramis have a lifespan of around 5 years and reach an average size of 5-6 inches for adults.

While they may not be suitable for all tank setups, they can make an excellent addition for those willing to provide the appropriate environment and attention to their needs.