Tricolor Fantail Goldfish
Tricolor Fantail Goldfish (Carassius auratus) displays three distinct colors — typically red, white, and black — in irregular patches on the Fantail's egg-shaped body and flowing double tail. The addition of dark or black markings to the red-and-white base creates a more complex and dramatic pattern than the two-tone forms.
Feeding & Care Tip: Hikari Fancy Goldfish slow-sinking pellets are the ideal staple for fancy goldfish — the slow sink rate gives these slower-swimming varieties time to feed without gulping air at the surface, which can cause swim bladder problems. Sera Goldy Color Spirulina enhances red and orange coloration. Supplement 2–3× per week with Hikari Frozen or Freeze-Dried Baby Brine Shrimp or Hikari Frozen Daphnia. If keeping alongside slim-bodied goldfish, offer Hikari Goldfish floating pellets at the same time — the slim-bodied fish will take the floating food while the fancies feed at their preferred mid-water level, ensuring both types eat well.
Three-color goldfish are generally produced through nacreous or matte scaling combined with metallic elements — the interaction of these scale types with different pigment layers produces the complex multi-color distribution. Black markings in goldfish can fade over time, particularly in warm water or intense light.
Keep in groups of two or more. Black markings may fade somewhat as the fish matures — this is normal in goldfish with black coloration and not a sign of poor health. A cooler temperature in the lower end of the range helps preserve black coloration. Fancy goldfish require a larger aquarium than most people expect — a minimum of 20 gallons for a single fish, with an additional 10 gallons per additional fish. A long, wide tank is preferable to a tall, narrow one — fancy goldfish spend most of their time in the lower half of the water column and benefit more from bottom area than height. Gentle filtration that moves the water without creating strong currents is ideal — the egg-shaped body of fancy goldfish makes them poor swimmers in turbulent water.
Goldfish are among the longest-lived aquarium fish — well-kept fancy goldfish regularly reach 10–15 years with excellent care. The investment in appropriate tank size, good filtration, and regular water changes is rewarded with a fish that becomes a genuine long-term companion. Filtration & Water Quality: Goldfish are high-waste fish that require robust filtration — significantly more than most tropical fish of equivalent size. A filter rated for at least twice the tank volume is recommended. Regular partial water changes of 25–30% weekly are essential. Despite their reputation as 'easy' fish, goldfish kept in under-filtered or overcrowded conditions decline quickly. Good filtration is the single most important factor in keeping goldfish healthy and long-lived.
Care & Ideal Parameters
| Difficulty | Easy — Moderate |
| Temperament | Peaceful — community with other fancy goldfish |
| Typical Adult Size | 8 inches (20 cm) |
| Min. Group Size | 2 minimum — 20 gallons per fish |
| Ideal Temp | 50–75°F (10–24°C) |
| Ideal pH | 6.5–8.0 |
| Ideal GH | 5–20 dGH |
| Ideal KH | 3–12 dKH |
| Staple Food | Hikari Fancy Goldfish (slow-sinking pellets); Sera Goldy Color Spirulina |
| Treat / Supplement | Hikari Frozen or Freeze-Dried Baby Brine Shrimp; Hikari Frozen Daphnia |
| Origin | China (captive-bred — all goldfish are domesticated Carassius auratus) |
| Notes | Three-color pattern — red, white, and black. Black markings may fade with age or in warm water — normal and not a health concern. |