Blue Gourami

Also known as: Trichopodus trichopterus

The Blue Gourami is a hardy labyrinth fish known for its iridescent blue-green coloration and elongated ventral fins used for touch and sensing. The Blue Gourami originates from Southeast Asia, including Thailand, Malaysia, Indonesia, and parts of Indochina, inhabiting slow-moving rivers, swamps, and flooded forests with dense vegetation., reaches Adult size: 12-15 cm in captivity, typically lives 4-6 years, and is kept at 24-28°C (75-82°F). Individual fish vary, so treat this as a general guide rather than a guarantee.

Species at a glance

Origin: Southeast Asia, including Thailand, Malaysia, Indonesia, and parts of Indochina, inhabiting slow-moving rivers, swamps, and flooded forests with dense vegetation.
Adult size: Adult size: 12-15 cm (4.7-5.9 inches)
Life span: 4-6 years
Temperament: Generally peaceful but can be territorial, especially males during breeding; may nip fins of slow-moving or long-finned tankmates.
Tank size: Minimum 75 liters (20 gallons) for a single fish; 115 liters (30 gallons) or more recommended for pairs or small groups.
Water temp: 24-28°C (75-82°F)
pH range: 6.0-8.0
Diet: Omnivorous; accepts high-quality flakes, pellets, frozen or live foods like brine shrimp, bloodworms, and daphnia, supplemented with blanched vegetables such as zucchini or spinach.
Other names: Trichopodus trichopterus

About the Blue Gourami

The Blue Gourami is a hardy labyrinth fish known for its iridescent blue-green coloration and elongated ventral fins used for touch and sensing. It possesses a labyrinth organ allowing it to breathe atmospheric air, enabling survival in low-oxygen environments. Males are typically more colorful and develop longer fins than females, especially during breeding displays. While adaptable, it thrives best in well-planted tanks with gentle filtration and subdued lighting.

Lifespan and health

With proper care, Blue Gouramis typically live 4-6 years in captivity, though exceptional individuals may reach up to 8 years under optimal conditions. Lifespan is strongly influenced by water quality, diet consistency, and stress levels; fish in stable, well-maintained tanks with low aggression and proper nutrition show significantly longer survival rates. Regular monitoring of behavior and appetite is key to early detection of issues. Common health issues include bacterial infections (such as fin rot or ulcers) often triggered by poor water quality or injury, parasitic infestations like Ich (white spot disease) especially during temperature fluctuations, and swim bladder disorders from overfeeding or constipation. Preventive measures include maintaining nitrate below 20 ppm, quarantining new fish for 2-4 weeks, and feeding a fiber-rich diet. Prompt treatment with appropriate medications and isolation of affected fish improves recovery outcomes.

Overview

Care and tank setup

Tank setup should include a minimum of 75 liters (20 gallons) with dense planting using species like Java fern, Anubias, or floating plants to provide cover and reduce stress. Use a gentle filter to avoid strong currents, as Blue Gouramis prefer calm water. Provide hiding spots with driftwood or caves, and maintain a substrate of fine gravel or sand. Lighting should be moderate to mimic their natural shaded habitat. Water parameters must be stable: temperature maintained between 24-28°C (75-82°F), pH between 6.0-8.0, and hardness between 5-19 dGH. Perform weekly water changes of 25% to prevent nitrate buildup, keeping ammonia and nitrite at 0 ppm. The labyrinth organ allows surface air breathing, so ensure unobstructed access to the water surface. Feed a varied diet twice daily, offering only what the fish can consume in 2-3 minutes. Staple diet should be high-quality omnivore flakes or pellets, supplemented 2-3 times weekly with frozen or live foods like brine shrimp or bloodworms. Include blanched vegetables once a week to support digestive health. Avoid overfeeding, as excess food degrades water quality quickly.

Adding a Blue Gourami? Research the species’ adult size and temperament carefully, quarantine new fish before introducing them to your tank, and buy from reputable aquarium stores or breeders.

Breed information on this page is based on the Wikipedia article on the Blue Gourami, supplemented with additional research. Reviewed for accuracy.