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Introducing the Jet Black Ranchu Goldfish—a rare and striking variety of fancy goldfish featuring a deep, solid black coloration from head to tail. With its iconic smooth back, rounded body, and slow, elegant swim, this Ranchu is both mysterious and elegant, making it a standout addition to any aquarium or pond.
Our Grower Pick means each Jet Black Ranchu is hand-selected directly from our farm for rich color, premium body shape, and top health. The photos shown are representative—you will receive a fish of similar size, form, and quality.
| Scientific Name | Carassius auratus |
|---|---|
| Origin | Selective breeding in China & Japan |
| Color | Solid black (jet black finish) |
| Type | Fancy Goldfish – Ranchu (no dorsal fin) |
| Size | Juveniles: 2.5–3.5"; adults: ~5–7" |
| Temperament | Peaceful, best with other fancy goldfish |
| Tank Recommendation | 20 gallons minimum per fish; larger tanks or ponds preferred |
| Water Temperature | 65–75°F (18–24°C) |
| pH | 6.8–7.6 |
| Hardness | 5–19 dGH |
| Diet | High-quality goldfish pellets, blanched vegetables, frozen/live treats |
| Tankmates | Fancy/slow-moving goldfish only |