Shark / Aquarium Zone · Ballina
Epalzeorhynchos bicolor
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 Red Tail Black Shark, scientifically known as Epalzeorhynchos bicolor, is a striking freshwater fish with a sleek black body and vibrant red tail fin. Its body is elongated and streamlined, with a distinctive black stripe running from its snout to the base of its tail. The intensity of the red colouration in the tail can vary among individuals, but it generally adds a pop of colour to any aquarium. This species is known for its active swimming behaviour and can be territorial, especially towards similar-looking species. Despite its name, the Red Tail Black Shark is not a true shark but rather a member of the Cyprinidae family.
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
Red Tail Black Sharks are known to be semi-aggressive and territorial, especially towards their own species and fish with similar body shapes. They are active swimmers and appreciate having plenty of hiding spots in the aquarium, such as caves or driftwood. It's important to provide them with adequate space and territories to establish their own boundaries and reduce aggression.
Tank planning
Maintaining good water quality is essential for the health of Red Tail Black Sharks. They prefer well-oxygenated water with moderate to strong water flow. Regular water changes and a well-established filtration system are crucial. Additionally, providing a structured environment with hiding spots and plants can help reduce stress and aggression in these fish.
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 Red Tail Black 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.
Red Tail Black Shark is listed with this tank recommendation: A minimum tank size of 150 litres is recommended for a single Red Tail Black Shark. However, due to their territorial nature, a larger tank of 200 litres or more is preferable if keeping multiple individuals or housing them with other species. 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 Red Tail Black Shark? Contact us to confirm current availability and discuss whether it suits your aquarium before making the trip.
18 Southern Cross Drive
