Bosemani Rainbow

The Boeseman Rainbowfish (Melanotaenia boesemani) is one of the most spectacular and colorful freshwater fish available, featuring a stunning two-tone coloration with the front half being deep blue and the rear half vibrant orange. These active, peaceful schooling fish create a breathtaking display as their colors shift and change with the light. Hardy, easy to care for, and exceptionally beautiful, Boeseman Rainbowfish are perfect for planted community aquariums where their brilliant colors can be fully appreciated.

Care Sheet – Boeseman Rainbowfish (Melanotaenia boesemani)

Temperament

• Peaceful, active schooling fish

• Best kept in groups of 6 or more for natural behavior

Adult Size

• 4–5 inches

Minimum Tank Size

• 30 gallons for a small school

Water Parameters

• Temperature: 75–82°F

• pH: 7.0–8.0

• Hardness: Moderate to hard (8–15 dGH)

• Ammonia/Nitrite: 0 ppm

• Nitrate: <20–30 ppm

Diet

• Omnivorous

• Feed a varied diet:

  • High-quality flakes or pellets

  • Frozen or live foods: brine shrimp, daphnia

  • Color-enhancing foods to maintain vibrant colors

• Feed small amounts 1–2 times daily

Behavior & Compatibility

• Excellent for peaceful community tanks

• Compatible with:

  • Other rainbowfish, larger tetras, peaceful barbs

  • Corydoras and other bottom dwellers

  • Peaceful gouramis and dwarf cichlids

• Avoid aggressive or fin-nipping species

Aquarium Setup

• Planted tanks with open swimming space

• Moderate to strong water flow

• Clean, well-oxygenated water

• Bright lighting to showcase colors

Care Level

• Easy to moderate

• Hardy and adaptable

Lifespan

• 5–8 years with proper care

Special Notes

• Stunning two-tone blue and orange coloration

• Colors intensify with age and in well-maintained tanks

• Very active swimmers that appreciate open space

• Males display more intense colors than females