M. Sahulensis Moa Island Rainbow - (No Online Purchases)

Description: The M. Sahulensis Moa Island Rainbow (Melanotaenia sahulensis) is a beautiful rainbowfish native to northern Australia and southern Papua New Guinea. The Moa Island population is especially sought after for its vibrant blue body, golden to yellow highlights and colourful fins. Peaceful, active and hardy, this rainbowfish is an excellent choice for larger community aquariums in homes and offices. Like other rainbowfish, they are happiest when kept in schools, where their natural behaviour and stunning colours can be fully appreciated. Quick Facts Common Name M. Sahulensis Moa Island Rainbow, Moa Island Rainbowfish Scientific Name Melanotaenia sahulensis Origin Moa Island, Torres Strait, Australia Adult Size 10–12 cm Lifespan 5–8 years Temperament Peaceful and active Care Level Easy Minimum Tank Size 180 litres Temperature 24–30°C pH 6.8–8.0 Hardness 5–20 dGH Diet Omnivore Appearance The Moa Island form of Melanotaenia sahulensis is highly regarded for its striking colours. Adults develop a shimmering blue to blue-green body with yellow to golden tones across the flanks and colourful yellow, orange or reddish fins, particularly in mature males. Males are larger, more colourful and develop a deeper body shape than females, especially during breeding displays. Healthy fish should have: Bright, vibrant colouration Clear, bright eyes Smooth, intact scales Fully extended fins Active, confident swimming behaviour Natural Habitat Melanotaenia sahulensis naturally occurs in freshwater rivers, lagoons, swamps and streams across northern Australia and southern Papua New Guinea. The Moa Island population inhabits warm tropical waterways with abundant aquatic vegetation, submerged timber and moderate water movement. In the aquarium, providing plants, driftwood and open swimming areas closely mimics their natural environment. Tank Requirements Moa Island Rainbowfish require spacious aquariums that allow for constant swimming activity. Recommended setup: Minimum 180-litre aquarium Keep in groups of at least 6 fish Open swimming space through the centre Live plants around the edges Driftwood and natural décor Moderate water circulation Secure lid to prevent jumping High-quality filtration and regular water changes A long aquarium provides the best swimming space and encourages natural schooling behaviour. Behaviour and Temperament M. Sahulensis Moa Island Rainbowfish are peaceful, energetic schooling fish that occupy the middle and upper levels of the aquarium. Keeping them in groups encourages natural interactions, increased confidence and more intense colouration. Males frequently display to one another by extending their fins and intensifying their colours, particularly during breeding periods, although aggression is rarely harmful. Their lively nature makes them an excellent feature species in larger community aquariums. Tank Mates These rainbowfish are compatible with many peaceful tropical fish that enjoy similar water conditions. Suitable tank mates include: Other Rainbowfish species Congo Tetras Larger Tetras Peaceful Barbs Pearl Gouramis Dwarf Gouramis Corydoras Bristlenose Catfish Loaches Peaceful cichlids such as Keyhole Cichlids and Rainbow Cichlids Avoid keeping them with: Aggressive cichlids Large predatory fish Very timid or slow-moving species Fish that require significantly cooler water Feeding M. Sahulensis Moa Island Rainbowfish are omnivores and readily accept a wide variety of foods. A balanced diet should include: High-quality tropical flakes Premium pellets Frozen bloodworms Frozen brine shrimp Daphnia Mosquito larvae Spirulina flakes and other vegetable-based foods Feed once or twice daily, providing only what they can consume within a few minutes. Water Parameters These rainbowfish thrive in clean, stable water with good oxygenation. Ideal parameters: Temperature: 24–30°C pH: 6.8–8.0 Ammonia: 0 ppm Nitrite: 0 ppm Nitrate: Below 20 ppm Consistent maintenance and regular water changes are essential for maintaining their health and vibrant colours. Breeding M. Sahulensis Moa Island Rainbowfish are egg scatterers and breed readily under suitable conditions. Breeding requirements include: Warm, clean water Fine-leaved plants or spawning mops A varied, protein-rich diet Separate breeding aquarium for raising fry Females lay adhesive eggs over several days. Adults should be removed after spawning if raising fry, as they may consume the eggs. Fry initially require infusoria before progressing to newly hatched brine shrimp and finely crushed foods. Common Health Issues These rainbowfish are hardy and generally resistant to disease when kept in appropriate conditions. Potential health concerns include: White Spot (Ich) Fin rot Bacterial infections External parasites Stress caused by overcrowding or poor water quality Providing excellent water quality, a nutritious diet and adequate swimming space will help prevent most health problems. Why Choose M. Sahulensis Moa Island Rainbow? M. Sahulensis Moa Island Rainbowfish are an outstanding choice for aquarists seeking a colourful, hardy and active schooling fish for larger freshwater aquariums. They offer: Brilliant blue and golden colouration Peaceful community temperament Active schooling behaviour Hardy and easy to care for Excellent compatibility with other peaceful fish Stunning display in planted aquariums Ideal for larger home and office aquariums With plenty of swimming room, clean warm water and a varied diet, M. Sahulensis Moa Island Rainbowfish will reward you with exceptional colour, lively behaviour and years of enjoyment as one of the highlights of your tropical freshwater aquarium.