Western Rainbowfish (Melanotaenia australis) – Tank Bred
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Product Overview
The Western Rainbowfish (Melanotaenia australis) is one of Australia's most colorful freshwater fish, prized for its active schooling behavior, metallic sheen, and brilliant red, orange, and yellow coloration. Mature males are especially impressive, often developing intense coloration that becomes even more vibrant during displays and breeding activity.
This species is constantly on the move and adds tremendous energy to larger community aquariums. Their peaceful temperament and hardy nature make them excellent candidates for rainbowfish communities as well as larger planted aquariums featuring other active schooling fish.
Our Tank-Bred Western Rainbowfish are carefully raised in captivity and adapt readily to aquarium life. When maintained in schools and provided with quality nutrition, these beautiful fish reward hobbyists with exceptional color, activity, and natural social behaviors.
What We Love About This Fish
• Brilliant red, orange, and yellow coloration in mature males
• Active schooling behavior adds constant movement
• Peaceful temperament for larger community aquariums
• Hardy, adaptable, and aquarium-raised
Quick Care Guide
• Care Level: Easy to Moderate
• Temperament: Peaceful
• Diet: Omnivore
• Origin: Tank Bred
• Adult Size: 4–5 Inches (10–13 cm)
• Average Purchase Size: 1.5–2 Inches
• Lifespan: 5–8 Years
• Activity Level: Active
• Schooling Requirement: Yes, best kept in groups of 6 or more
• Swimming Zone: Middle to Upper Levels
Tank Parameters
• Temperature: 72–82°F (22–28°C)
• pH: 6.5–8.0
• GH: 8–20 dGH
• Minimum Aquarium Size: 55 Gallons
• Recommended School Size: 6+ Individuals
• Water Flow: Moderate
Natural Habitat
Western Rainbowfish are native to rivers, streams, billabongs, and freshwater pools throughout northwestern Australia. Many of these habitats experience seasonal fluctuations in water levels and temperatures, contributing to the species' adaptability and resilience.
In the wild, they are typically found in areas with submerged vegetation, woody debris, and open swimming space. These environments provide shelter, feeding opportunities, and areas for breeding displays.
Their natural habitat often consists of clear to slightly stained water with abundant sunlight, which helps support algae growth, aquatic plants, and the small invertebrates that form part of their natural diet.
Aquascaping
Western Rainbowfish thrive in aquariums that combine open swimming areas with planted sections and natural hardscape. Because they are active schooling fish, maintaining ample open water is just as important as providing cover.
Driftwood, river stones, and planted borders help recreate their natural environment while giving fish security and visual structure. Taller background plants work especially well since these fish spend much of their time in the middle and upper portions of the aquarium.
Excellent plant choices include Vallisneria, Amazon Sword Plants, Water Wisteria, Bacopa, and various stem plants. Floating plants can also help diffuse lighting while creating a more natural appearance.
A larger planted community aquarium with open swimming lanes is often considered the ideal setup for this species.
Diet and Feeding
Western Rainbowfish are omnivores that readily accept a wide variety of foods. In nature, they consume small insects, insect larvae, crustaceans, algae, biofilm, and plant material.
High-quality flake foods make an excellent staple diet and are readily accepted by aquarium-raised specimens. Quality pellets, frozen foods, and live foods can be offered regularly to provide additional variety and nutrition.
Foods such as bloodworms, daphnia, brine shrimp, blackworms, and insect-based foods help support coloration, growth, and breeding condition. Mature males often display their best colors when maintained on a varied diet.
Providing multiple food types throughout the week helps mimic natural feeding opportunities while promoting long-term health and vitality.
Tank Mates and Compatibility
Western Rainbowfish are peaceful schooling fish that work exceptionally well in larger community aquariums. Their active nature makes them best suited for similarly energetic species.
Excellent tank mates include:
• Boesemani Rainbowfish (Melanotaenia boesemani) – Colorful Schooling Fish
• Turquoise Rainbowfish (Melanotaenia lacustris) – Active Midwater Species
• Dwarf Neon Rainbowfish (Melanotaenia praecox) – Smaller Rainbowfish Companion
• Congo Tetra (Phenacogrammus interruptus) – Colorful Schooling Fish
• Denison Barb (Sahyadria denisonii) – Active Community Fish
• Pearl Gourami (Trichopodus leerii) – Peaceful Feature Fish
• Bristlenose Pleco (Ancistrus spp.) – Algae Grazing Bottom Dweller
• Corydoras Catfish (Corydoras spp.) – Social Bottom Dweller
Because they are schooling fish, Western Rainbowfish should always be maintained in groups. Keeping too few individuals may result in shy behavior and reduced coloration.
Shrimp Safe
Adult shrimp may coexist with Western Rainbowfish in larger aquariums, but shrimplets and very small shrimp are at risk of predation.
Shrimp Compatibility Rating
Adult Shrimp: Moderate Compatibility
Juvenile Shrimp: Low Compatibility
Shrimplets: High Predation Risk
Breeding
Western Rainbowfish are egg scatterers that deposit adhesive eggs among fine-leaved plants, spawning mops, and similar structures. Mature males intensify in coloration during breeding displays and actively court females.
While breeding is relatively straightforward, raising large numbers of fry typically requires a dedicated breeding setup to prevent predation on eggs and newly hatched fry.
A varied diet, clean water, and stable conditions often encourage spawning activity in mature groups.
Breeding Difficulty
Moderate
Reproduction Type
Egg Scatterer
Frequently Asked Questions
Are Western Rainbowfish beginner friendly?
Yes. Their hardy nature and adaptability make them suitable for many hobbyists, particularly those with medium to large aquariums.
How many Western Rainbowfish should I keep together?
We recommend keeping at least six individuals, though larger groups often display more natural schooling behavior.
Are Western Rainbowfish aggressive?
No. They are generally peaceful community fish, although males may spar harmlessly when establishing dominance.
Do Western Rainbowfish need to be kept in schools?
Yes. This species naturally forms schools and is most comfortable when maintained in groups.
How large do Western Rainbowfish get?
Most adults reach approximately 4–5 inches in length.
Can Western Rainbowfish live with other rainbowfish?
Absolutely. They are excellent companions for many rainbowfish species.
What makes Western Rainbowfish different from Boesemani Rainbowfish?
Western Rainbowfish typically develop stronger red and orange coloration throughout the body, while Boesemani Rainbowfish display a distinctive blue front half and orange rear half.
Are Western Rainbowfish good for planted aquariums?
Yes. They thrive in planted aquariums that also provide ample open swimming space.
Do Western Rainbowfish eat plants?
No. They are generally considered plant safe.
Can Western Rainbowfish live with shrimp?
Large adult shrimp may coexist successfully, but shrimplets are often viewed as food.
Why are my Western Rainbowfish pale?
Stress, poor diet, immature age, shipping acclimation, and social hierarchy changes can temporarily reduce coloration.
Do males and females look different?
Yes. Males typically develop brighter coloration, deeper bodies, and more pronounced finnage.
When do Western Rainbowfish develop their best colors?
Most individuals become increasingly colorful as they mature, with males showing the most dramatic coloration.
Shipping Information
All fish are carefully packed in insulated shipping materials and ship via UPS Next Day Air or Overnight service to ensure they arrive healthy and ready to thrive.
Our professional packing methods are designed specifically for live aquatic animals and are backed by our Live Arrival Guarantee.
For the safety of our animals, we only ship live fish, crabs, and select other inverts exclusively via UPS 1 Day Air. If your order contains this item, you will only see UPS 1 Day Air as a shipping option during checkout. If other items are in your cart that can ship with 2 day or standard shipping options the only shipping method you can still select is UPS 1 Day Air.
UPS 1 Day is a description of the duration of time a shipment will spend in transit once it has been shipped. This does not guarantee the package will be shipped the same or next day from which the order was placed.
Shipping Schedule for this service
Current Handling Time:
1-9 business days
Here at Aquatic Arts, we consider the welfare of the live animals we are shipping to be of the foremost importance. This process is much more involved than simply creating a shipping label and affixing it to a box. Depending on the order, it takes from 4 to 7 people to complete this process properly. We check the weather conditions here where they fly out of the Indianapolis UPS facility and the destination for each shipment. We start early each morning and go through a multi-step process to have the day's shipments prepared in time for the UPS pickup. The volume of orders in our system also affects the processing time. Therefore our stated handling time is 1-9 business days.
Shipping Rate
Pricing is by size of package needed to fill entire order and distance it must travel. It will be calculated at checkout.
Live Arrival Guarantee
We stand behind the health and quality of every fish we ship. Each Western Rainbowfish is carefully quarantined, observed, and conditioned before leaving our facility.
Every order is backed by our 100% Live Arrival Guarantee. If an issue occurs during transit, please contact us with photos and order information within the timeframe outlined in our policy.
For complete details, please visit:
https://aquaticarts.com/policies/refund-policy
Questions? Contact us anytime at info@aquaticarts.com.
Best Fishes,
The Aquatic Arts Team