Blue Gourami

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Trichogaster trichopterus - (Pallas, 1770)
Blue Gourami

A big, hardy, colorful fish that is a stellar community member.


This is a peaceful, robust bubblenester that fits nicely in a peaceful community of larger species.

Gold or Yellow form.
"Green Opaline or Cosby" form.
"Blue Opaline or Cosby" form.

It is usually silvery blue in color, and several color varieties are available, including the Opaline and Gold gouramis. (Opaline Gouramis are sometimes called "Cosby" or "Marbled" Gouramis.)

The wild Three-spot form is usually a silvery fish, while the more popular Blue Gourami has been developed from specimens collected in Sumatra.

Family: Osphronemidae

Other common name(s):

  • Three-Spot Gourami
  • Opaline Gourami
  • Gold Gourami
  • Yellow Gourami
  • Cosby Gourami
  • Marbled Gourami

Native range:

Habitat: Prefers a densely planted aquarium with a cover of floating plants, as well as hiding places in the form of rocks and driftwood. Provide a dark substrate to best show off their colors.

Maximum length: 15 cm (6 in)

Minimum aquarium size: 150 L (40 gal)

Water: Freshwater 22 °C (72 °F) - 26 °C (79 °F)

General swimming level: Midwater to top.


Omnivore. The Blue Gourami will accept just about any aquarium fare, including good-quality flakes and freeze-dried foods, frozen foods, such as Daphnia and brine shrimp, as well as live foods, including bloodworms and tubificid worms. Supplement with some type of vegetable-based food. Prized for their appetite for the aquarium pest, Hydra.

Aquarium Compatibility

Should be housed with fishes of similar size and temperament. Best kept in a group of one male to two females—only one male per tank, as they may fight.


Male builds a bubblenest early in the day.



If kept with aggressive or fin-nipping species, such as barbs, will spend most of the time hiding in the corners of the aquarium.

Reference: 101 Best Tropical Fishes
Image credit: JJ
Text credit: KW