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Calico Ranchu GoldfishHere is a complete profile and care guide for the beautiful and unique Calico Ranchu Goldfish, a prized fancy variety in the goldfish world: Calico Ranchu Goldfish Full Details & Care Guide Common Names: Calico Ranchu Ranchu Goldfish (Calico variant) Buffalo head Goldfish King of Goldfish (in Japan) Scientific Classification: Category Detail Scientific Name Carassius auratus Family Cyprinidae Type Freshwater Fancy Goldfish Origin Japan (developed from
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Here is a complete profile and care guide for the beautiful and unique Calico Ranchu Goldfish, a prized fancy variety in the goldfish world:
🐟 Calico Ranchu Goldfish – Full Details & Care Guide
✅ Common Names:
-
Calico Ranchu
-
Ranchu Goldfish (Calico variant)
-
Buffalo-head Goldfish
-
King of Goldfish (in Japan)
🔬 Scientific Classification:
| Category | Detail |
|---|---|
| Scientific Name | Carassius auratus |
| Family | Cyprinidae |
| Type | Freshwater Fancy Goldfish |
| Origin | Japan (developed from Chinese Lionhead Goldfish) |
📏 Appearance & Coloration:
| Feature | Description |
|---|---|
| Body Shape | Rounded, egg-shaped body with no dorsal fin |
| Head Growth (Wen) | Prominent raspberry-like fleshy growth on head and face |
| Tail & Fins | Double tail (fan-shaped), short pectoral fins, flowing movement |
| Color Pattern | "Calico" pattern – mix of red, orange, black, white, and blue spots over a pearly or translucent base |
| Size | 5 – 8 inches (12 – 20 cm) when fully grown |
| Dorsal Fin | Absent – gives a smooth, arched back |
🎨 No two Calico Ranchus are the same – each has a unique color blend and spotting.
🌡️ Water Parameters:
| Parameter | Ideal Range |
|---|---|
| Temperature | 20 – 26°C (68 – 78°F) |
| pH Level | 6.5 – 7.5 |
| GH (Hardness) | 5 – 19 dGH |
| Ammonia/Nitrite | 0 ppm (very sensitive) |
| Water Type | Freshwater only (do not tolerate salt for long periods) |
💧 Ranchus need clean, stable, and oxygen-rich water. Avoid sudden pH/temp changes.
🏡 Tank Setup:
| Feature | Recommendation |
|---|---|
| Tank Size | Minimum 30 gallons for one Ranchu; +10 gallons per additional fish |
| Substrate | Sand or bare-bottom (for easier cleaning) |
| Decor | Smooth rocks, live plants like Anubias, Java Fern (avoid sharp or rough items) |
| Filter | Strong filtration but gentle flow (use sponge filter or pre-filter sponge) |
| Heater | Recommended for stable tropical temps |
| Aeration | Use air stones to ensure good oxygen exchange |
⚠️ Avoid fast currents — Ranchus are slow swimmers and may struggle.
🍽️ Feeding Guide:
| Type | Examples |
|---|---|
| Staple Diet | High-quality sinking goldfish pellets or gel food |
| Supplemental | Bloodworms, daphnia, brine shrimp (live or frozen) |
| Vegetables | Blanched peas (shelled), spinach, zucchini |
| Feeding Tips | Feed small amounts 2–3 times daily; avoid floating food to prevent gulping air |
✅ Soak pellets to soften them. Feed sinking food to reduce swim bladder issues.
🧼 Maintenance Tips:
-
Perform 30–40% water changes weekly
-
Use a gravel vacuum to remove waste
-
Test water regularly for ammonia/nitrite/nitrate
-
Ranchus produce a lot of waste, so overfiltration is helpful
🧬 Breeding Calico Ranchus:
| Feature | Description |
|---|---|
| Maturity Age | 1 – 2 years |
| Spawning Season | Spring (or temperature increase can trigger) |
| Breeding Method | Egg scatterers – fertilized eggs laid on plants/mops |
| Fry Care | Remove adults to prevent egg eating; raise fry on baby brine shrimp and fine powder food |
| Color Inheritance | Calico pattern may appear later and varies widely in fry |
🧾 Quick Profile Summary:
| Trait | Info |
|---|---|
| Scientific Name | Carassius auratus |
| Common Name | Calico Ranchu |
| Size | 5 – 8 inches |
| Lifespan | 10 – 15 years (with proper care) |
| Temperament | Peaceful, social |
| Care Level | Intermediate |
| Tank Level | Bottom to mid-level |
| Swimming Style | Slow and graceful |
| Compatibility | Best with other fancy goldfish only (avoid fast swimmers or fin-nippers) |
🌟 Highlights:
-
👑 Considered the "King of Goldfish" in Japan
-
🎨 Stunning and unique calico patterns – no two are alike!
-
🐌 Peaceful nature — great for indoor aquariums and show tanks
-
💧 Requires clean, stable conditions due to sensitive swim bladder and wen
IMAGES ARE FOR REPRESENTATIVE PURPOSES ONLY.
Calico Ranchu Goldfish
Item no
:
59726556554
US$ 225.00
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