Behaviour
How it lives.
These fish are social and should be kept in groups of at least 6 individuals to prevent aggression. They are active swimmers and enjoy exploring their environment.
Barb / Aquarium Zone · Ballina
Pethia nigrofasciata
Semi-aggressive, so choose its tankmates with care. Grows to about 5 cm and suits a tank of 30 litres or more.
The fish, up close
The Black Ruby Barb, also known as the Purplehead Barb, is a striking freshwater fish with a deep red body and black markings. They are peaceful and active swimmers, making them a popular choice for community aquariums.
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
These fish are social and should be kept in groups of at least 6 individuals to prevent aggression. They are active swimmers and enjoy exploring their environment.
Tank planning
Maintain a well-planted aquarium with plenty of hiding spots and open swimming areas. Keep the water temperature between 22-26°C and ensure good water quality with regular water changes.
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 Black Ruby Barb.
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.
Black Ruby Barb is listed with this tank recommendation: A minimum tank size of 30 litres is recommended for a small group of Black Ruby Barbs. Provide ample swimming space and hiding spots to keep them happy and healthy. 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 Black Ruby Barb? Contact us to confirm current availability and discuss whether it suits your aquarium before making the trip.
18 Southern Cross Drive