Bosemani Rainbowfish (Melanotaenia boesemani) Bosemani Rainbowfish are vibrant freshwater fish native to West Papua, Indonesia, celebrated for their striking coloration and active schooling behavior. Juveniles display a silvery-gray body, gradually developing brilliant blue on the front half and vivid orange on the rear half as they mature. Hardy and social, they thrive in schools and make a stunning centerpiece for community tanks.
Quick Facts:
Origin: West Papua, Indonesia
Family: Melanotaeniidae
Adult Size: Up to 12 cm
Lifespan: 5–8 years
Temperament: Peaceful, active, schooling
School Size: Keep in groups of 6 or more
Tank Level: Mid to top-level
Diet: Omnivore – high-quality flakes, pellets, live or frozen foods
Water Temperature: 24–28 °C
pH Range: 7.0–8.0
Water Hardness: Moderately soft to moderately hard
Tank Setup: Open swimming areas, plants, robust filtration
Compatibility: Best with peaceful, active community fish
Care Level: Easy to intermediate
Color Progression:
Juveniles: Silvery-gray with subtle hints of blue
Adults: Front half bright metallic blue, rear half vivid orange, creating a striking bicolor effect
