© George Chernilevsky / Public domainGiant gourami
The giant gourami is a freshwater fish from Southeast Asia and one of the largest members of the gourami family. Juveniles are charming, with vertical stripes. Adults reach a standard length of up to 70 cm, typically around 45 cm, and develop a prominent bump on the forehead. Some individuals live for 20 years or more, so an extra-large tank and a lifelong commitment are essential. Many become used to their keeper and swim up to greet them. Its difficulty is rated intermediate, and it suits people who want a long-term companion in a big aquarium.
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Apply as a breederGiant gourami key facts
- Care level
- Intermediate
- Lifespan
- Can live over 20 years in captivity
- Size
- Up to 70 cm SL, commonly about 45 cm
- Temperature
- 20〜30℃
- Diet
- Omnivore (prepared foods, frozen foods, vegetables)
- Water Temperature & Quality
- 20-30°C, pH 6.5-8.0 (FishBase). Very hardy, but messy, so powerful filtration is essential.
- Aquarium
- Seriously Fish suggests a 183 x 61 cm footprint; adults exceed 50 cm, so lifelong care needs at least an extra-large tank of this size. Provide robust rocks and wood; floating plants may be eaten.
- Tank Mates & Compatibility
- Eats small fish but is generally peaceful with large ones; some become aggressive in cramped tanks. Knifefish, large catfish and plecos are possible companions.
- Diet & Feeding
- Eats almost anything: pellets and frozen foods plus vegetables and other plant matter.
- Breeding & Egg-laying
- The male builds a nest of plant material. Breeding adults needs an enormous tank and is not realistic at home.
- Health & Cautions
- Avoid dyed fish, which suffer from the injection process. Never release it, however large it grows.
About Giant gourami
The giant gourami is a large Southeast Asian gourami. Juveniles have cute vertical stripes; adults reach up to 70 cm standard length and grow a forehead bump. It can live 20 years or more and suits intermediate keepers with a very large tank.
7 things to know before welcoming a Giant gourami
1Plan for adult size
Adults grow to a standard length of up to 70 cm, and typically around 45 cm. Don't judge by the small juvenile alone. Think through where the final-size tank will go and how much it will weigh before bringing one home.
2A 20-year commitment
In captivity, giant gouramis can live 20 years or more. Consider moves, changes in your household and future tank replacements, and ask yourself whether you can care for the fish for its whole life.
3Huge tank, strong filter
A big body and a big appetite mean plenty of waste, so the water can foul quickly. Prepare a very large tank with generous water volume and a high-capacity filter, and keep water quality stable with regular water changes.
4Surface air and a lid
Gouramis have a labyrinth organ that lets them breathe air at the surface. Leave an air space above the water and fit a lid so they don't gulp cold air. A lid also helps prevent jumping out of the tank.
5Choose tankmates carefully
Adults may eat fish small enough to fit in their mouths, and they can quarrel with each other. If you keep them with other fish, choose tankmates of similar size, give them plenty of space and watch their behavior closely.
6Omnivore that eats plants
Giant gouramis are omnivores and will eat prepared foods as well as vegetables. Live plants may be eaten or uprooted, so choose tough materials or consider a tank without plants.
7Daily health checks
Check appetite, swimming behavior, white spots on the body and any damage to the fins every day. Fish can be stressed right after arrival, so acclimate them carefully. If something seems wrong, consult an aquatic veterinarian or an experienced keeper.
Frequently asked questions about Giant gourami
- Q.How large does it grow?
- A.It reaches up to 70 cm in standard length, and typically around 45 cm. Juveniles are small but grow a lot, so plan around a tank that suits the adult size.
- Q.Can a beginner keep one?
- A.Its difficulty is rated intermediate. You need to plan for a large tank and manage water quality with the adult size in mind. It is safer to get comfortable with basic tropical fish care first.
- Q.How long does it live?
- A.In captivity it can live 20 years or more. Think about whether you can keep caring for it over that time, including possible changes in your living situation.
- Q.Can it live with other fish?
- A.Adults may eat fish small enough to swallow, so it is wise to avoid small tankmates. If you do mix species, use a spacious tank, choose fish of similar size and keep a close eye on them.
- Q.Does it look different as an adult?
- A.Juveniles have charming vertical stripes, but adults look quite different and develop a raised forehead. Remember that the juvenile look is temporary, and check what adults look like before you decide.
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Learn more about Giant gourami in the encyclopedia
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Care difficulty, lifespan, size and diet — all basics covered.
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