The Calico Fantail Goldfish (Carassius auratus) is a stunning variety of fancy goldfish known for its striking multicolored calico pattern, flowing double tail, and graceful swimming style. This variety combines beauty and resilience, making it a popular choice for both indoor freshwater aquariums and outdoor ponds.

At 5 cm when sold as juveniles, Calico Fantails can grow up to 15–20 cm (6–8 inches) in length under optimal care. Their vibrant mix of colors—usually including shades of orange, black, white, and blue—adds a lively splash to any aquatic environment.

✅ Key Features

• Size: 5 cm juvenile; adults can reach 15–20 cm

• Temperament: Peaceful and social

• Care Level: Easy, suitable for beginners

• Lifespan: 10–15 years with proper care

• Special Trait: Colorful calico pattern with flowing fantail fins

Care Guide for Calico Fantail Goldfish

✅ Tank/Pond Requirements

• Minimum Tank Size: 75 liters (20 gallons) for one fish; larger for groups

• Outdoor Ponds: Suitable for well-filtered, aerated ponds

• Aquascape: Smooth decorations to prevent fin damage; plenty of open swimming space

• Lighting: Moderate to bright lighting enhances coloration

• Substrate: Fine gravel or sand to protect delicate fins

✅ Water Parameters

• Temperature: 18°C – 24°C (64°F – 75°F)

• pH Level: 6.5 – 7.5

• Water Hardness: 5 – 19 dGH

• Filtration: Strong filtration recommended to handle bioload

• Water Changes: Weekly 25–30% water changes maintain water quality

✅ Feeding Habits

Calico Fantails are omnivorous and enjoy a balanced diet of both plant and animal matter.

• Recommended Diet:

  • High-quality goldfish pellets or flakes

  • Frozen or live foods (bloodworms, daphnia, brine shrimp)

  • Fresh vegetables (blanched peas, spinach, zucchini)

Feed small portions 2–3 times daily to prevent digestive issues.

✅ Tank Mates

These goldfish are peaceful and best kept with other slow-moving species.

Ideal Tank Mates:

• Other fancy goldfish (Oranda, Ryukin, Red White Fantail)

• Dojo Loaches

• Apple Snails

Avoid fast or aggressive fish that may nip their fins or compete aggressively for food.

✅ Behavior & Breeding

• Behavior: Calm, social fish that enjoy company

• Breeding: Egg layers; spawning occurs in groups during warmer months

• Tip: Use spawning mops or fine-leaved plants to protect eggs

Why Choose Calico Fantail Goldfish?

• Vibrant and eye-catching calico coloration

• Hardy, beginner-friendly fancy goldfish

• Graceful swimmer with elegant flowing fins

• Peaceful temperament suitable for community setups

✅ Perfect for both beginner and experienced goldfish keepers
✅ A colorful and elegant addition to freshwater aquariums and ponds