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Fish profile · Coldwater fish

Oranda goldfish

The oranda is a fancy goldfish with a fleshy wen and twin tail: a pair needs 40 gallons, spotless water, 59-75 °F and equally slow tankmates.

By The AcuarioSano Team Updated on 3 min read
Oranda goldfish (Carassius auratus)
Photo: Benson Kua from Toronto, Canada · CC BY-SA 2.0 · Wikimedia Commons

Quick facts

Carassius auratus

Scientific name
Carassius auratus
Origin
Captive-bred variety
Difficulty
Moderate
Adult size
7.1 in (18 cm)
Minimum tank
40 gal (150 L)
Minimum group
2 fish
Temperature
59–75 °F (15–24 °C)
pH
6.5–8
Hardness (GH)
5–19 °dGH
Temperament
Peaceful
Tank zone
All levels
Diet
Omnivore
Lifespan
12 years
Breeding
Egg scatterer
Plant-safe
No
Shrimp-safe
No

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Contents +

Overview

The oranda is one of the best-loved fancy goldfish. It has a short, rounded body, a dorsal fin, a long flowing twin tail and, above all, the wen: a fleshy hood on the head that develops over the years. Orandas come in red, orange, black, blue, calico and the classic "red cap", a white fish with a red hood.

It was developed in China and Japan from the goldfish, so it is the same species, but its compact body makes it a slow swimmer and more delicate than common goldfish. Orandas are calm, very tame and often beg for food at the glass. They are a good pick for anyone with a roomy coldwater aquarium who is willing to stay on top of maintenance.

Care and tank setup

Plan on at least 40 gallons (150 L) for a pair of orandas, plus 10-15 gallons for each extra fish. A wide tank that is not too tall beats a narrow one.

  • Spotless water: the wen traps debris and is prone to bacterial and fungal infections when nitrates run high. Use a strong filter with a diffused outlet and change 30-50% of the water weekly.
  • Gentle flow: the long tail and round body tire quickly in strong currents.
  • Safe decor: no sharp rocks or ornaments with edges; sand or smooth coarse gravel and tough plants such as anubias or Java fern.
  • Temperature: ideally steady at 64-72 °F (18-22 °C); indoors a heater is usually unnecessary, but avoid sudden swings.

Keep orandas only with other round-bodied fancy goldfish; never with comets or common goldfish, which outcompete them for food, and never with fin nippers. They do not belong in a bowl or in a pond with harsh winters, and they must never be released into the wild.

Feeding

Omnivorous. Feed a quality fancy-goldfish pellet that sinks, or soak it first: gulping air at the surface contributes to swim bladder problems in these compact bodies. Add blanched, shelled peas, spinach and frozen brine shrimp or daphnia. Small portions once or twice a day plus one fasting day per week help prevent constipation.

Breeding

Orandas breed like other goldfish: in spring, with rising temperatures and water changes, males chase females, which scatter sticky eggs over plants or a spawning mop. Parents eat the eggs. Breeding at home is possible, but only a small share of each spawn will develop the body shape and wen of a quality oranda, and the rest will still need homes.

Compatible tank mates

Species from our database that share water parameters, size and temperament with the Oranda goldfish. Calculated from the data in each profile.

Check the compatibility of your whole tank →

What not to keep it with

Popular species you shouldn’t house with the Oranda goldfish, and why.

Recommended equipment

What you need to keep the Oranda goldfish healthy, checked against Amazon stock.

Large aquariums (55 gallons and up) 8.8 AcuarioSano rating: 8.8 out of 10
Canister filters 8.9 AcuarioSano rating: 8.9 out of 10
Goldfish food 9.3 AcuarioSano rating: 9.3 out of 10
Aquarium water test kits 9.2 AcuarioSano rating: 9.2 out of 10

Frequently asked questions

How many liters does a Oranda goldfish need?+

At least about 150 liters for a group of at least 2 fish. More space always helps keep the water stable.

What water temperature does the Oranda goldfish need?+

Between 15 and 24 °C: it’s a coldwater species that doesn’t need a heater in a normal home. pH 6.5 to 8.

What fish can live with the Oranda goldfish?+

Based on water, size and temperament, it fits with species such as Bristlenose pleco, Bronze cory, Zebra danio, Guppy and Platy. Use our compatibility calculator to check your whole tank.

Can the Oranda goldfish be kept with shrimp?+

Not recommended: because of its size or instinct, it will eat shrimp.

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