Description

Australian Rainbow

📌 Basic Info

• Scientific Name: Melanotaenia splendida

• Common Names: Australian Rainbow, Splendid Rainbowfish

• Family: Melanotaeniidae (Rainbowfish Family)

• Order: Atheriniformes

• Origin: Australia — rivers, lakes, and streams in Queensland and Northern Australia

• Size: Up to 6 inches (15 cm) in captivity

• Lifespan: 5 – 8 years

• Tank Zone: Mid to upper water column

🌊 Water Parameters

• TDS: 100 – 300 ppm

• pH: 6.5 – 7.5

• Temperature: 24 – 28°C (75 – 82°F)

• Hardness: 5 – 20 dGH

🐟 Characteristics

• Body: Laterally compressed, elongated body with smooth scales.

• Coloration: Bright metallic colors; males often display vibrant blues, reds, and greens; females are usually more subdued.

• Fins: Dorsal and anal fins elongated; caudal fin slightly forked.

• Behavior: Peaceful and active schooling fish; social and interactive.

• Nature: Diurnal; enjoys open swimming spaces and plants.

• Special Feature: Colors intensify in groups and with proper water conditions.

🍽️ Food

• Type: Omnivorous

• Diet: Flakes, micro-pellets, live/frozen foods such as brine shrimp, daphnia, and bloodworms.

• Feeding Frequency: Once or twice daily.

• Tip: Provide a varied diet to maintain bright colors and health.

🛠️ Maintenance

• Tank Size: Minimum 100 liters (25 gallons) for a small school.

• Filtration: Moderate to strong filtration; gentle to moderate water flow.

• Substrate: Sand or fine gravel.

• Decor: Plants, driftwood, and open swimming areas; floating plants for security.

• Lighting: Moderate to bright; enhances metallic colors.

• Water Change: 20–25% weekly.

👥 Social Behavior

• Group Size: Best kept in schools of 6 or more.

• Tank Mates: Peaceful community fish like tetras, guppies, rasboras, and other rainbowfish.

• Avoid: Aggressive or fin-nipping species.

• Compatibility Note: Very social; solitary individuals may stress easily.

✅ Do’s

• Keep in schools to enhance color and behavior.

• Provide open swimming areas with plants.

• Maintain clean water with regular changes.

• Feed a varied diet including live and frozen foods.

❌ Don’ts

• Don’t keep singly; they are schooling fish.

• Don’t house with aggressive species.

• Don’t neglect water quality; sensitive to ammonia/nitrite spikes.

⭐ Quick Tips
Australian Rainbowfish are peaceful, active, and brilliantly colored freshwater fish. Their metallic hues, energetic schooling behavior, and adaptability make them ideal for community aquariums and planted tanks, adding vibrant color and life.