🐟 Blue Rainbowfish Care Sheet 🔹 Overview Category Details Scientific Name Melanotaenia sp. (Blue variant) Common Name Blue Rainbowfish Origin Australia, New Guinea, and nearby islands (species dependent) Adult Size 8–12 cm (3–5 in), depending on species Lifespan 5–8 years Temperament Peaceful, schooling Tank Level Mid to upper 🔹 Tank Setup Parameter Ideal Range Tank Size 100+ liters (25+ gallons) for a small school Temperature 24–28 °C (75–82 °F) pH 6.5–7.5 Hardness 5–15 dGH Substrate Sand or fine gravel Decor Plants, driftwood, open swimming areas Lighting Moderate to bright Filtration Moderate flow; well-oxygenated water Tips: Keep in groups of at least 6–8 to maintain natural schooling behavior. Provide open swimming areas with some plants or floating cover. Regular water changes enhance color intensity. 🔹 Diet Type: Omnivorous Best Foods: High-quality flakes or pellets, frozen/live foods (brine shrimp, daphnia, bloodworms), vegetable matter. Feeding Frequency: 2–3 small feedings daily. 🔹 Behavior & Compatibility Peaceful and active; excellent in community aquariums. Males are brighter in color and may show some territorial displays during breeding. Mid- to upper-level swimmers that enjoy open water. 🧭 Tank Mate Guide ✅ Compatible Species Other rainbowfish species Tetras and danios Corydoras catfish Peaceful barbs Gouramis (peaceful species) ⚠️ Avoid or Use Caution With Aggressive or very large fish Fin-nippers or predatory species Slow-moving or delicate fish 🐣 Breeding Info Spawning Method: Egg scatterers; fine-leaved plants or spawning mops recommended. Parental Care: None; adults may eat eggs. Fry Care: Feed infusoria or liquid fry food initially, then baby brine shrimp. 🌿 Fun Facts Named for their vivid blue coloration and metallic sheen. Excellent centerpiece for community tanks due to bright colors and schooling behavior. Hardy and adaptable if kept in proper water conditions.
