Rainbow Gourami (Trichogaster trichopterus)
The Rainbow Gourami is a captivating addition to any aquarium, celebrated for its vibrant hues reminiscent of a rainbow. Originally hailing from the slow-moving waters of Southeast Asia, Rainbow Gouramis available in the aquarium trade are predominantly bred in captivity, ensuring consistent coloration and patterns that enhance the visual appeal of any aquatic environment.
Distinguished by their elongated bodies and iridescent scales, Rainbow Dwarf Gouramis typically reach lengths of 4 to 6 inches, boasting elegant fins that gracefully flow as they move. Setting up an aquarium for these fish requires careful attention to their territorial nature. A tank of at least 20 gallons, equipped with plenty of hiding spots and live plants, is recommended for optimal well-being.
| Specifications | Details |
|---|---|
| Scientific Name | Trichogaster trichopterus |
| Size | 4 to 6 inches |
| Temperament | Medium to territorial |
| Water Temperature | 75°F to 82°F |
| Water pH | 6.0 to 7.5 |
| Tank Size | At least 20 gallons |
FAQ
What is the typical size of a Rainbow Gourami?
Rainbow Gouramis typically reach a length of 4 to 6 inches.
What kind of tank setup is recommended for Rainbow Gouramis?
A tank of at least 20 gallons with plenty of hiding spots and live plants is recommended to accommodate their territorial nature.
What is the ideal water temperature for Rainbow Gouramis?
The ideal water temperature ranges from 75°F to 82°F.

Carol Lyman –
The Rainbow Gourami is stunning with its bright, shifting colors. I kept it in a 20-gallon tank with floating plants and it’s very active. It doesn’t seem aggressive with other fish, as long as there are plenty of hiding places.
Richard Edmunds –
Beautiful fish with a lively presence. I noticed the colors change slightly in different lighting. Needs a bit of space and some plants to feel secure. Works well in a community tank with non-aggressive species.
Boris Manning –
I’ve had this gourami for three months and it’s still vibrant and healthy. The tank setup was simple, but I added driftwood and java ferns to give it places to hide. It’s a joy to watch swim in the background.