Shark / Aquarium Zone · Ballina
Epalzeorhynchos frenatum
Semi-aggressive, so choose its tankmates with care. Grows to about 15 cm and suits a tank of 200 litres or more.
The fish, up close
The Rainbow Shark, scientifically known as Epalzeorhynchos frenatum, is a striking fish with a sleek, elongated body and vibrant red fins. Its body is a dark grey to black colour, accentuating the brilliant red colouration of its dorsal, caudal, and anal fins. This species is known for its territorial behaviour and can be quite aggressive towards other bottom-dwelling fish in the aquarium. Providing ample hiding spaces and territories within the tank can help mitigate aggression.
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
Rainbow Sharks are known to be territorial and can exhibit aggressive behaviour towards other bottom-dwelling fish, especially if they feel their space is being invaded. They are active swimmers and spend a lot of time exploring the nooks and crannies of the aquarium. Providing them with caves, driftwood, and plants can help satisfy their need for hiding spots and territories.
Tank planning
Maintaining good water quality is essential for Rainbow Sharks, as they are sensitive to poor water conditions. They prefer well-oxygenated water with a moderate to strong water flow. Regular water changes and a well-established tank with plenty of hiding spaces are crucial for their well-being. It's important to monitor their behaviour and ensure they are not being overly aggressive towards tank mates.
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 Rainbow Shark.
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.
Rainbow Shark is listed with this tank recommendation: A minimum tank size of 100 litres is recommended for a single Rainbow Shark. However, if you plan to keep multiple Rainbow Sharks or other bottom-dwelling fish in the same tank, a larger tank size of 200 litres or more is advisable to provide ample space and territories for each fish. 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 Rainbow Shark? Contact us to confirm current availability and discuss whether it suits your aquarium before making the trip.
18 Southern Cross Drive
