Description
The Ranchu Red and White goldfish, known for its distinctive appearance and vibrant color patterns, is a popular variety of the Ranchu goldfish. This ornamental fish is highly regarded by aquarists for its unique charm and active nature. Ranchu develop very impressive head growth as they mature. They are suitable for indoor tanks and outdoor garden ponds (but provide protection from predators if kept outdoors.)
Native to East Asia, it has been selectively bred for centuries, making it a beloved addition to home aquariums worldwide.
Shop live aquarium fish online with confidence, with our livestock delivery guarantee.
Features of a Ranchu Red and White
-
Distinctive body shape: Rounded body with no dorsal fin, creating a unique, arching profile.
-
Coloration: A mixture of red and white with clear demarcations, making it a striking fish.
-
Facial features: Prominent, often protruding eyes and a well-developed wen (a fleshy growth on the head).
-
Size: Grows up to 15–20 cm in length.
-
Temperament: Peaceful, active, and social, generally tolerant of other species.
-
Lifespan: Can live up to 10–15 years with proper care.
The Best Aquarium Size for Ranchu Red and White
For optimal growth and health, a minimum aquarium size of 75 liters is recommended for a single Ranchu Red and White. This allows ample swimming space, promoting a stress-free environment. If housing multiple Ranchu goldfish, increase the tank size to around 150 liters to accommodate their social nature and prevent overcrowding.
After an Aquarium for your fish? Browse our Aquarium Tank Selection here.
Tank Mate Compatibility for Ranchu Red and White
Ranchu Red and White goldfish are generally peaceful and can coexist with various other species in a well-maintained aquarium. However, they prefer companions that share similar care needs and temperament. Recommended tank mates include:
-
Koi (Carp species)
-
Shubunkin goldfish
-
Pearlscale goldfish
-
Platies
-
Swordtails
-
Zebra Danios
Diet for Ranchu Red and White
Ranchu Red and White goldfish are omnivorous and require a balanced diet to thrive. They should be fed high-quality pellets or flakes designed specifically for goldfish, supplemented with live or frozen foods such as daphnia, brine shrimp, or bloodworms. Vegetables like peas and spinach can be offered occasionally to aid digestion. Ensure to feed them small amounts several times a day to avoid overfeeding.
Browse our High Quality Fish Food online.
Aquarium Setup for Ranchu Red and White
Aquarium Filtration
A reliable filtration system is essential to maintain water quality. Choose a filter with a capacity suited to the size of the aquarium. A sponge filter or an external canister filter is ideal, as these provide gentle yet efficient filtration without creating strong currents that could stress the Ranchu.
Browse aquarium filters here.
Aquarium Plants
Ranchu Red and White goldfish tend to be non-aggressive towards plants, but they may nibble on softer varieties. It’s best to choose hardy plants such as Java fern, Anubias, or hornwort. These plants can thrive in the moderate light conditions of the aquarium and withstand some nibbling.
Interested in live plants for your aquariums? Browse live plants here.
Aquarium Lighting
While Ranchu goldfish do not require intense lighting, a light period of 10–12 hours a day will help regulate their day-night cycle. Use low to moderate lighting to avoid stressing the fish and plants, as overly bright lighting can also encourage algae growth.
Need aquarium lighting for your fish tank? Browse our Aquarium Lighting.
Aquarium Heating
Ranchu Red and White goldfish prefer water temperatures between 18–22°C. A stable temperature is essential, so a reliable aquarium heater with a thermometer is recommended, especially in colder climates.
Looking for a suitable fish tank heater? Shop aquarium heaters here.
Aquarium Substrate
A soft substrate, such as fine gravel or sand, is best for Ranchu goldfish. This prevents injuries to their delicate bodies while allowing for easy cleaning. Avoid sharp or large substrates, as they can cause harm.
Shop a variety of Aquarium Substrates here.
Aquarium Decorations
Ranchu Red and White goldfish enjoy a simple setup with some hiding spots and open swimming space. Avoid sharp or abrasive decorations. Smooth rocks, ceramic caves, and floating decorations provide hiding opportunities while maintaining space for swimming.
Check out our huge range of Aquarium Ornaments.
