Rainbow Fish / Aquarium Zone · Ballina
Melanotaenia lacustris
A peaceful community fish. Grows to about 10 cm and suits a tank of 80 litres or more.
The fish, up close
The Turquoise rainbowfish (Melanotaenia lacustris) is a stunning freshwater fish known for its vibrant turquoise-blue colouration. This species has a slender, elongated body with iridescent scales that shimmer under the aquarium lights. The fins of the Turquoise rainbowfish are typically yellow or orange, adding to its striking appearance. These fish are peaceful and active swimmers, making them a popular choice for community aquariums. They thrive in well-planted tanks with ample swimming space and subdued lighting to showcase their beautiful colours.
Care guide
Use these notes to shape a setup around the fish, then speak with our team about the tank you have in mind.
Plan your setupBehaviour
Turquoise rainbowfish are peaceful and social fish that do well in groups of at least six individuals. They are active swimmers that will often display schooling behaviour, especially when kept in a spacious tank with plenty of swimming room. These fish are not aggressive and can be kept with other peaceful community fish of similar size.
Tank planning
Maintaining stable water parameters is crucial for the health of Turquoise rainbowfish. They prefer water temperatures between 23-27°C and slightly acidic to neutral water conditions (pH 6.5-7.5). Regular water changes and good filtration are important to keep the aquarium clean and maintain water quality.
Practical details
Questions
For a specific fish, current stock or a tank setup question, speak with the Aquarium Zone team before travelling.
Contact the storeAquarium Zone regularly helps customers find freshwater fish in Ballina and across the Northern Rivers. Stock changes week to week, so contact the store before visiting if you are looking for Turquoise rainbow.
Yes. Bring your tank size, current fish list, setup photos, and any water test results so the team can help with compatibility, stocking, and care advice.
Turquoise rainbow is listed with this tank recommendation: A tank size of at least 80 litres is recommended for a small group of Turquoise rainbowfish. Provide ample swimming space and plant cover to create a natural environment for these active swimmers. Ask in-store for advice based on your exact setup and tank mates.
Yes. Aquarium Zone serves aquarium hobbyists from Ballina, Lennox Head, Alstonville, Wollongbar, Bangalow, Byron Bay, Lismore, Evans Head, Mullumbimby, Casino and the wider Northern Rivers.
Aquarium Zone / Ballina
Looking for Turquoise rainbow? Contact us to confirm current availability and discuss whether it suits your aquarium before making the trip.
18 Southern Cross Drive
