Goyder River Rainbowfish (Melanotaenia trifasciata) – Pair
The Goyder River rainbowfish is a lively, schooling fish native to Australia, growing up to 13 cm (5 inches) but commonly reaching 8 cm.
It features a distinct mid-lateral blue-black stripe in males, with body and fins displaying vibrant colors like yellow, orange, and red that intensify with age and in the presence of females.
These peaceful community fish are well-suited for beginners, thriving in planted tanks with groups of at least five, clear, oxygenated water, and can be kept with other peaceful community fish.
| Species | Melanotaenia trifasciata |
|---|---|
| Size | Up to 13 cm (5 inches), commonly 8 cm |
| Temperament | Peaceful, schooling |
| Group Size | At least five fish |
| Water Conditions | Clear, oxygenated water |
FAQ
What is the typical size of Goyder River rainbowfish?
The Goyder River rainbowfish typically reaches 8 cm in length, with a maximum size of 13 cm (5 inches).
Are these fish suitable for beginners?
Yes, Goyder River rainbowfish are peaceful and well-suited for beginners, especially when kept in groups of at least five in a well-planted, oxygenated tank.
Can they be kept with other fish?
Yes, they can be kept with other peaceful community fish, as long as the tank environment is stable and the water conditions are clear and well-oxygenated.

Robert Robertson –
Received the pair of rainbowfish in good condition. They are active and colorful, especially when the tank has plants and a good flow. The blue stripe on the male is very noticeable. I have them with tetras and they coexist peacefully. Easy to care for once the tank is set up properly.
Lucas Paterson –
The fish arrived quickly and looked healthy. They seem to enjoy the planted tank environment. Colors brighten over time, especially when there are females present. I keep them in a 60-liter tank with gentle filtration and regular water changes.
Christian Smith –
Great addition to my community tank. The fish swim together in groups and are very active. I noticed the color intensity increases after a few weeks. They don’t stress other fish and adapt well to the setup.