Description
The Melanotaenia gracilis – Elegant Rainbowfish thrives in a spacious, well-planted aquarium with smooth gravel or sand substrate, driftwood, and rocks to provide hiding spots and territory markers. They enjoy open swimming areas and moderate water flow, which keeps them active and healthy. Bright lighting enhances their shimmering silver-blue body, making them a vibrant addition to community aquariums.
Shop live rainbowfish online delivered with confidence with our livestock guarantee.
Features of Elegant Rainbowfish:
- Sleek, silver-blue iridescent body
- Active mid- to top-level swimmer
- Peaceful schooling species
- Hardy and adaptable
- Grows up to 10–12 cm
- Level of care: Moderate
The Best Aquarium Size for Elegant Rainbowfish
Melanotaenia gracilis enjoy swimming in schools of 6 or more. Recommended aquarium size is 120 litres or more to provide ample swimming space and reduce stress. Larger tanks are ideal for community setups with other peaceful tropical fish.
After an Aquarium for your fish? Browse our aquariums available here.
Tank Mate Compatibility
These rainbowfish are peaceful and compatible with other medium-sized, non-aggressive species. Avoid keeping them with very small or aggressive fish that may stress them.
Here are some great tank mates to consider:
Diet
Elegant Rainbowfish are omnivorous and thrive on a varied diet. Provide high-quality flakes or pellets as a base diet and supplement with live or frozen foods such as brine shrimp, daphnia, and bloodworms. Occasional vegetable matter, like spirulina flakes, supports color vibrancy.
Check out our extensive range of aquarium fish foods.
Elegant Rainbowfish Tank Setup
Aquarium Filtration
A moderate filtration system is ideal, as these active swimmers require well-oxygenated water. Canister or sponge filters with adjustable flow maintain clean water without stressing the fish.
Explore aquarium filtration products here.
Aquarium Heater
Maintain water temperatures between 24–28°C. A reliable heater and thermometer ensure stable conditions for growth, health, and vibrant coloration.
Looking for an aquarium heater? View available aquarium heaters here.
Aquarium Plants
Rooted and floating plants provide shade and cover. Hardy species like Anubias, Java Fern, and Amazon Swords are ideal. Floating plants help reduce stress and provide shaded swimming areas.
Interested in live plants for your aquarium? View our range of live aquarium plants here.
Aquarium Decorations
Driftwood, rocks, and caves create hiding spots and territory markers. Ensure open swimming space for their active schooling behavior.
View our large range of aquarium decorations here.
Aquarium Lighting
Bright LED lighting enhances their silver-blue iridescence and supports plant growth. Floating plants can create shaded areas if desired.
Need aquarium lighting? View available aquarium lighting here.
Substrate
Use smooth gravel or sand to replicate their natural habitat. They enjoy swimming near the substrate while schooling.
View our large range of aquarium decorations here.
