Goldfish / Aquarium Zone · Ballina
Carassius auratus auratus
Semi-aggressive, so choose its tankmates with care. Grows to about 20 cm and suits a tank of 75 litres or more.
The fish, up close
The Ranchu, scientifically known as Carassius auratus auratus, is a popular fancy goldfish variety characterized by its distinctive egg-shaped body and lack of a dorsal fin. With a rounded back and a deep body, Ranchus have a short, double tail fin and can come in a variety of colours such as red, white, orange, and calico. Their headgrowth or 'wen' is a prominent feature, developing into a hood-like protrusion over the head as they age. Ranchus are prized for their cute appearance, often likened to a chubby little pig swimming gracefully in the water.
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
Ranchus are peaceful and social fish that do well in groups or pairs. They are active swimmers but not as fast as some other goldfish varieties. Ranchus are known for their playful nature and can be seen scavenging the substrate for food or exploring their surroundings.
Tank planning
Maintaining good water quality is essential for the health of Ranchus, as they are sensitive to high levels of ammonia and nitrites. Regular water changes, filtration, and monitoring of water parameters are crucial. Additionally, providing a well-aerated tank with plenty of swimming space and hiding spots will help keep Ranchus happy and healthy.
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 Ranchu.
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.
Ranchu is listed with this tank recommendation: A single Ranchu should be kept in a tank of at least 75 litres. For each additional Ranchu, add around 40-50 litres per fish to accommodate their growth and social needs. 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 Ranchu? Contact us to confirm current availability and discuss whether it suits your aquarium before making the trip.
18 Southern Cross Drive
