Boeseman's Rainbowfish — Fish Profile
Melanotaenia boesemani
Quick Specs
| Adult Size: | 4.5" |
| Temperament: | peaceful |
| Care Level: | beginner |
| Min Tank Size: | 30 gallons |
| Temperature: | 75-82°F |
| pH Range: | 7.0-8.0 |
| Diet: | omnivore |
| Origin: | West Papua (Indonesia) |
| Lifespan: | 5-8 years |
Overview
Boeseman's Rainbowfish are stunning freshwater fish with a striking two-tone color pattern — blue-grey on the front half and vibrant orange-red on the rear. Males develop more intense coloration as they mature. They are active schooling fish that should be kept in groups of 6+.
Care Guide for Boeseman's Rainbowfish
Tank Setup
Boeseman's Rainbowfish requires a minimum tank size of 30 gallons. Maintain water temperature between 75°F and 82°F, with a pH range of 7.0 to 8.0. A properly sized tank with adequate filtration and regular water changes is essential for long-term health. When housing Boeseman's Rainbowfish with other species, always choose a tank size that accommodates the most demanding fish in the community.
Feeding
Boeseman's Rainbowfish is a omnivore feeder. Provide a varied diet appropriate for omnivore species to ensure optimal health and coloration. Feed small portions 2–3 times daily, and remove uneaten food after a few minutes to maintain water quality.
Temperament & Compatibility
This species is classified as peaceful. Boeseman's Rainbowfish reaches an adult size of 4.5 inches and has a care level of beginner. Always research compatibility before adding new fish to an established aquarium. Individual temperament can vary, so monitor new introductions closely for the first 48 hours.
Origin & Lifespan
Boeseman's Rainbowfish originates from West Papua (Indonesia) and has an expected lifespan of 5-8 years when kept in proper water conditions with appropriate tank mates and diet.
Compatible Tank Mates
🟢 Good Tank Mates
🟡 Caution Tank Mates
🔴 Risky Tank Mates
Compatibility Results for Boeseman's Rainbowfish
All 69 compatibility checks involving Boeseman's Rainbowfish:
Recommended for Boeseman's Rainbowfish
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Expert Care Tips for Boeseman's Rainbowfish
- Mid-size tank: Boeseman's Rainbowfish needs 30+ gallons. Choose a tank at least 2× as long as the fish's adult size (4.5") for adequate swimming room.
- Warm-water species: Boeseman's Rainbowfish prefers 75–82°F. Use a reliable submersible heater with a thermostat — avoid temperature swings above 2°F per day.
- Narrow pH tolerance: Boeseman's Rainbowfish only tolerates pH 7.0–8.0. Test your tap water before buying — adjusting pH is harder than choosing the right fish for your water.
- Peaceful community fish: Boeseman's Rainbowfish works well in community tanks. Still, avoid housing with fish large enough to eat them — a 4.5" fish is vulnerable to anything with a mouth bigger than 2×.
- Acclimation: Always drip-acclimate Boeseman's Rainbowfish over 30–45 minutes. Match temperature and pH gradually to prevent osmotic shock.