Millenium Rainbow – Medium
A smaller Glossolepis (up to 4 inches) but very elegant rainbowfish. Males develop a deep body with brilliant shimmering red colors at an early age. Peaceful and well suited to a planted tank.
| Scientific Name | Glossolepis psuedoincisus |
|---|---|
| Family | Melanotaeniidae |
| Origin | Papua New Guinea; Lake Ifaten |
| Compatibility with Planted Aquariums | Compatible |
| Care and Handling | Contrary to some popular opinion, these Rainbows are very hardy provided you provide adequate space, good filtration (they thrive in planted tanks) and don’t let the water get too hot (>84F). They will handle low temps better than most tropicals. |
FAQ
What is the maximum size of the Millenium Rainbow?
The Millenium Rainbow grows up to 4 inches in length.
Are these fish suitable for a planted tank?
Yes, they are compatible with planted aquariums and thrive in such environments.
What water temperature do they prefer?
They prefer cooler water and do not tolerate temperatures above 84°F.

David Murray –
The Millenium Rainbow is a stunning addition to my planted tank. The male develops vibrant red colors quickly and stays very calm. I’ve had them for six months and they’re thriving in the 78°F water. Great for beginners who want colorful, peaceful fish.
Gavin May –
These fish are beautiful and active without being aggressive. I noticed the color change in just a few weeks. They do need a well-planted tank with good filtration, but once set up, they’re very easy to maintain.
Maria Payne –
I was worried about compatibility with my plants, but they coexist well. The fish are hardy and adapt to lower temperatures. I keep them in a 10-gallon tank with live plants and they’re doing fine.