The Fantail Goldfish (Carassius auratus) is a popular aquarium fish species known for its unique appearance and ease of care. Originating from China, Japan, and Korea, this fish is a member of the Cyprinidae family and can be found in a variety of colors, including red, orange, white, and black.
One of the most notable features of the Fantail Goldfish is its double tail, which gives it a distinctive appearance compared to other goldfish species. The egg-shaped body of the fish also sets it apart from other common aquarium fish. With an average adult size of 6 inches (15 cm), the Fantail Goldfish requires a minimum aquarium size of 20 gallons (76 liters) or larger to thrive.
Overall, the Fantail Goldfish is a great choice for beginners looking to start a home aquarium. Its peaceful temperament and easy care requirements make it a favorite among hobbyists.
|Origin / Distribution
|China, Japan, and Korea
|6 inches (15 cm)
|20 gallons (76 liters) or larger
|Temperature: 65-72°F (18-22°C) pH: 7.0-7.8 Hardness: 5-19 dGH
|1-2 times per day
|Other peaceful community fish
|Egg layer, requires separate breeding tank
|Unique Features / Appearance
|Double-tailed, egg-shaped body, and various colors including red, orange, white, and black
|Fantail Goldfish are popular for their unique appearance and easy care requirements. They can be kept in a variety of aquarium setups, including cold water and tropical aquariums. Overfeeding should be avoided to prevent health problems.
The Fantail Goldfish (Carassius auratus) belongs to the following taxonomic classifications:
- Common Name: Fantail Goldfish
- Scientific Name: Carassius auratus
- Family: Cyprinidae
- Order: Cypriniformes
As a member of the Cyprinidae family, the Fantail Goldfish is closely related to other popular aquarium fish such as the Koi (Cyprinus carpio) and the Rosy Barb (Pethia conchonius). The Cypriniformes order includes over 3000 fish species and is one of the largest fish orders in the world.
Natural Habitat & Distribution
The Fantail Goldfish (Carassius auratus) is native to East Asia, specifically China, Japan, and Korea. They were originally bred from Prussian carp (Carassius gibelio) and were selectively bred for their unique appearance.
In the wild, Fantail Goldfish can be found in a variety of freshwater environments such as ponds, lakes, and slow-moving rivers. They are tolerant of a wide range of water conditions and can survive in both cold and warm water.
Today, Fantail Goldfish are found in aquariums and ponds worldwide, and have been introduced into the wild in some areas outside their native range. They are a popular ornamental fish and can be found in both coldwater and tropical aquarium setups.
The Fantail Goldfish (Carassius auratus) is a visually stunning fish with a unique appearance. Here are some of the key physical characteristics of this species:
As an adult, the Fantail Goldfish can reach an average length of 6 inches (15 cm).
Coloration and patterns
The Fantail Goldfish is known for its vibrant colors, which can include red, orange, white, and black, as well as various patterns such as metallic, calico, or nacreous scales. Some Fantail Goldfish may also have color variations or markings that are specific to individual specimens.
Body shape and fin structures
The egg-shaped body of the Fantail Goldfish is paired with a distinctive double tail, which gives it a unique appearance compared to other goldfish species. The dorsal fin is small and pointed, while the pectoral and pelvic fins are broad and fan-shaped.
Males and females can be difficult to distinguish when they are young, but as they mature, males tend to develop more pointed and elongated fins, and may also have small white breeding tubercles on their gill covers during the breeding season.
Overall, the Fantail Goldfish is a visually stunning fish that can add a unique touch to any aquarium or pond. With its distinctive appearance and vibrant coloration, it is sure to be a popular choice among fish enthusiasts.
Behavior & Temperament
The Fantail Goldfish (Carassius auratus) is generally peaceful and has a mild temperament, making it a popular choice for community aquariums. Here are some key characteristics of the Fantail Goldfish’s behavior:
The Fantail Goldfish is a peaceful fish that does not exhibit aggressive or territorial behavior. It tends to be a slow swimmer and spends much of its time scavenging the bottom of the tank for food. While it is not a schooling fish, it can be kept with other peaceful fish species in a community aquarium.
The Fantail Goldfish is a social fish that enjoys the company of other fish. It is not uncommon to see them swimming together in pairs or small groups.
The Fantail Goldfish can be kept with a variety of other peaceful fish species in a community aquarium. Some suitable tankmates for the Fantail Goldfish include other goldfish varieties such as the Comet Goldfish or the Black Moor, as well as other community fish species like the Neon Tetra or the Harlequin Rasbora.
Overall, the Fantail Goldfish is a peaceful and social fish that can coexist with a variety of other fish species in a community aquarium. With its mild temperament and social behavior, it is sure to be a popular addition to any aquarium setup.
Providing suitable aquarium conditions is essential for the health and well-being of the Fantail Goldfish (Carassius auratus). Here are some key factors to consider when setting up an aquarium for this species:
Minimum tank size
A minimum tank size of 20 gallons (76 liters) or larger is recommended for a single Fantail Goldfish. If keeping multiple fish, the aquarium should be even larger to ensure adequate swimming space.
The ideal water temperature for the Fantail Goldfish is between 65-72°F (18-22°C), with a pH range of 7.0-7.8 and hardness levels of 5-19 dGH. A good water quality is important, so regular water changes are recommended to keep the water clean and healthy for the fish.
Filtration and aeration needs
A filtration system is necessary to maintain water quality in the aquarium. Since Fantail Goldfish produce a lot of waste, a filter that can handle a high bioload is recommended. An air pump or other aeration device can also help to increase oxygen levels in the water.
The Fantail Goldfish prefers a soft substrate like sand or fine gravel, which is less likely to damage their delicate fins or cause injury while they are scavenging the bottom for food.
Moderate lighting is sufficient for the Fantail Goldfish. They do not require any special lighting needs, but it is important to provide a regular day and night cycle to maintain a natural light cycle.
Decorations and hiding places
Providing hiding places and decorations, such as rocks, driftwood, and plants, can create a more natural environment for the Fantail Goldfish. This can also help to reduce stress and provide areas for the fish to rest or hide when needed.
Overall, providing the proper aquarium requirements for the Fantail Goldfish is key to ensuring their health and well-being in captivity.
Diet & Feeding
The Fantail Goldfish (Carassius auratus) is an omnivorous fish that requires a balanced and varied diet. Here are some key factors to consider when feeding this species:
Type of diet
The Fantail Goldfish is an omnivore and requires a varied diet that includes both plant and animal-based foods. They can be fed commercial fish flakes or pellets, as well as fresh or frozen foods such as brine shrimp, bloodworms, and chopped vegetables like peas or lettuce. It is important to avoid overfeeding and provide a variety of food sources to ensure proper nutrition.
Adult Fantail Goldfish should be fed once or twice a day, in small portions that they can consume within 2-3 minutes. Overfeeding can cause health problems such as swim bladder issues, so it is important to avoid feeding them too much.
Tips for providing a balanced and varied diet
To provide a balanced diet, it is recommended to offer a variety of foods such as high-quality flakes or pellets, freeze-dried or frozen foods, and fresh vegetables. Offering a variety of foods can help to prevent boredom and provide the necessary nutrients for their health.
The Fantail Goldfish (Carassius auratus) is a peaceful fish that can coexist with a variety of other peaceful fish species in a community aquarium. Here are some factors to consider when selecting tank mates for this species:
Other goldfish varieties such as the Comet Goldfish, Black Moor, and Ryukin are good choices for tank mates. Other community fish species such as Tetras, Rasboras, and Corydoras catfish can also coexist peacefully with the Fantail Goldfish.
Incompatible or potentially problematic species
Aggressive or territorial fish species should be avoided as tank mates, as they may cause stress or harm to the Fantail Goldfish. Cichlids and some species of Gourami, for example, can be aggressive and may not be suitable for a community tank with the Fantail Goldfish.
Recommendations for creating a harmonious community tank
To create a harmonious community tank, it is important to provide adequate space and hiding places for all the fish. It is recommended to provide plenty of live or artificial plants, rocks, and other decorations to provide areas for the fish to rest or hide when needed. Additionally, it is important to avoid overstocking the tank, as this can lead to territorial behavior and aggression between fish.
Breeding the Fantail Goldfish (Carassius auratus) can be a rewarding experience for fish keepers. Here are some factors to consider when breeding this species:
The breeding behavior of the Fantail Goldfish is similar to that of other goldfish varieties. During the breeding season, males will develop small white bumps called breeding tubercles on their gill covers and front fins. Females will become plump and their vent (the opening near the anus) will protrude slightly. Males will chase females around the tank, and the female will lay eggs on the plants or substrate. The male will then fertilize the eggs.
Ideal breeding conditions
To breed the Fantail Goldfish, it is important to provide ideal breeding conditions such as adequate space, clean water, and a proper diet. The ideal water temperature for breeding is between 68-74°F (20-23°C), and the pH should be neutral to slightly alkaline. Providing plants or other spawning mops can also encourage the fish to breed.
Raising fry (offspring) and specific care requirements
Once the eggs are fertilized, they will hatch within 4-7 days. The fry can be fed commercially available fry food or finely crushed flakes. It is important to keep the water clean and well-oxygenated to ensure the fry’s survival. As the fry grow, they should be separated into their own tank to prevent cannibalism and provide adequate space. It is recommended to perform regular water changes and provide a varied diet to ensure healthy growth.
Health & Disease
Maintaining good health and preventing disease is important for the long-term well-being of the Fantail Goldfish (Carassius auratus). Here are some common diseases and strategies for preventing and treating them:
Common diseases and their symptoms
Some common diseases that can affect the Fantail Goldfish include fungal infections, bacterial infections, parasitic infections, and swim bladder disease. Symptoms of these diseases may include lethargy, loss of appetite, abnormal swimming behavior, discoloration, or visible growths or lesions on the body.
Prevention and treatment strategies
To prevent disease, it is important to maintain good water quality, provide a balanced diet, and avoid overcrowding the tank. Quarantining new fish before introducing them to the main tank can also prevent the spread of disease. If a disease does occur, it is important to identify the specific disease and treat it accordingly. This may involve isolating the affected fish, performing regular water changes, and administering medication as prescribed by a veterinarian or fish expert.
The Fantail Goldfish (Carassius auratus) is generally considered an easy fish to care for, making it a good choice for beginner and intermediate fish keepers. Here are some factors to consider when caring for this species:
Difficulty of care
The Fantail Goldfish is generally considered an easy fish to care for, with low to moderate care requirements. They are hardy and adaptable, and can tolerate a range of water conditions. However, it is still important to provide adequate space, good water quality, and a balanced diet to ensure their health and well-being.
Special considerations or requirements
While the Fantail Goldfish does not have any special care requirements, there are some considerations to keep in mind. They are social fish and should be kept with other peaceful fish species in a community aquarium. Additionally, they require a minimum tank size of 20 gallons (76 liters) or larger and should be provided with hiding places and decorations to create a natural environment. It is also important to avoid overfeeding and perform regular water changes to maintain good water quality.
The Fantail Goldfish (Carassius auratus) is a popular aquarium fish and is not currently listed on the International Union for Conservation of Nature (IUCN) Red List. However, the wild ancestor of the goldfish, the Prussian Carp (Carassius gibelio), is listed as Least Concern due to its widespread distribution and stable populations in its natural range.
While there are no legal restrictions on keeping the Fantail Goldfish in captivity, it is important to ensure that they are obtained from reputable sources and not collected from the wild. Irresponsible collection and trade of ornamental fish can contribute to the depletion of wild populations and harm the natural ecosystem.
Overall, while the Fantail Goldfish is not currently threatened in the wild, it is important to support responsible and sustainable practices in the trade of ornamental fish to ensure the long-term health and survival of wild fish populations.
Additional Information & Fun Facts
- The Fantail Goldfish is a popular ornamental fish species that has been selectively bred for its unique double tail and round body shape.
- In addition to the standard orange coloration, Fantail Goldfish can also come in a variety of colors, including black, red, white, and blue.
- The Fantail Goldfish is one of the oldest known varieties of domesticated goldfish, with a history that dates back to ancient China.
- The Fantail Goldfish is a hardy and adaptable species that can tolerate a range of water conditions, making it a popular choice for beginner and intermediate fish keepers.
- In Japan, the Fantail Goldfish is known as “Ryukin,” which means “dragon goldfish,” due to its unique appearance.
- The Fantail Goldfish is a social species that should be kept with other peaceful fish in a community aquarium.
- In addition to their aesthetic appeal, the Fantail Goldfish can also provide therapeutic benefits, as watching fish swim has been shown to reduce stress and anxiety.
- Hobbyists often enjoy participating in goldfish shows and competitions, where their Fantail Goldfish can be judged based on criteria such as body shape, color, and finnage.