Boeseman’s Rainbowfish (Melanotaenia boesemani)
One of the most popular rainbowfish in the pet trade, the Boeseman’s Rainbowfish is known for its striking appearance. Males feature a metallic turquoise front half and a bright yellow to orange tail, making them a standout in any aquarium.
Females have a more uniform metallic greenish-blue coloration and are generally less vibrant than males. Coloration can vary based on lineage, geographic origin, age, and gender.
Note: The images shown are typical examples of mature adult fish and may not reflect the exact coloration of currently available stock. Actual fish may differ due to natural variation in species characteristics.
Specifications
| Species | Melanotaenia boesemani |
|---|---|
| Size | Up to 4 inches (10 cm) |
| Temperature | 72–78°F (22–26°C) |
| Water pH | 6.0–7.5 |
| Compatibility | Peaceful community fish; avoid aggressive or large species |
FAQ
Can I expect the fish to have the exact color shown in the photos?
Actual coloration may vary due to lineage, age, gender, and environmental factors. The photos provided are representative examples, not a guarantee of current stock appearance.
Are the fish available in both male and female forms?
Yes, both males and females are available. Males typically display more vivid coloration, especially in the tail, while females have a more uniform metallic blue-green hue.
Is this species suitable for beginners?
Yes, Boeseman’s Rainbowfish are generally peaceful and thrive in well-maintained community tanks, making them a good choice for novice aquarists.

Justin Hudson –
The fish arrived healthy and active. The colors are vibrant, especially the males with their turquoise body and bright tail. I’ve kept them in a 20-gallon tank with other peaceful fish and they seem to get along well. The only thing to note is that the coloration isn’t exactly as in the photos, but it’s still very attractive.
Lauren Hardacre –
I ordered a pair and both fish are active and colorful. The female is quite nice with her uniform blue-green body. I didn’t see the exact tail colors in the photos, but the fish look natural and lively in the tank.
Rachel Johnston –
Great addition to my aquarium. The fish are calm and swim together nicely. I noticed slight variation in color between individuals, which is normal for the species. Overall, a satisfying purchase.