Ryukin Goldfish Medium

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  • Category: Fantails
  • Product Code: DTN9017678821
  • Availability: In Stock

  • $8.00 $10.00


Ryukin Goldfish Care Sheet

Overview

Category Details
Scientific Name Carassius auratus (Ryukin variety)
Common Name Ryukin Goldfish
Origin China & Japan (selectively bred)
Adult Size 1520 cm (68 in), sometimes larger
Lifespan 1015 years (up to 20+ with excellent care)
Temperament Peaceful, social
Tank Level Mid-level

Tank Setup

Parameter Ideal Range
Tank Size 75+ liters (20+ gallons) for one; +40 liters per additional fish
Temperature 1823 C (6474 F)
pH 6.57.8
Hardness 515 dGH
Substrate Smooth gravel or sand
Decor Smooth rocks, hardy plants, open swimming space
Lighting Low to moderate
Filtration Strong filtration; goldfish produce heavy waste

Tips:

  • Avoid sharp decorationsRyukins have delicate fins.

  • Provide high oxygenation and strong filtration to handle waste.

  • Best in larger tanks due to size and activity level.

Diet

  • Type: Omnivorous

  • Best Foods: High-quality sinking goldfish pellets, gel foods, blanched vegetables (peas, spinach, zucchini), occasional frozen foods (bloodworms, brine shrimp).

  • Feeding Frequency: 12 small meals daily; avoid floating foods to reduce swim bladder issues.

Behavior & Compatibility

  • Peaceful and social; best kept with other fancy goldfish.

  • Slow swimmersmay struggle competing with fast tankmates.

  • Do not keep with fin-nippers or tropical fish requiring high temps.

Tank Mate Guide

Compatible Species

  • Other fancy goldfish varieties (e.g., Oranda, Fantail, Ranchu)

  • Weather loaches (in cooler setups)

  • White Cloud Mountain Minnows (in large tanks only)

Avoid or Use Caution With

  • Comet or Common goldfish (too fast and aggressive eaters)

  • Tropical fish requiring higher temps

  • Fin-nippers or aggressive species

Breeding Info

  • Spawning Method: Egg scatterers; use spawning mops or dense plants.

  • Parental Care: None; adults will eat eggs.

  • Fry Care: Feed infusoria or powdered fry food, then baby brine shrimp.

Fun Facts

  • Known for its high dorsal hump and deep, rounded body shape.

  • One of the oldest and most popular fancy goldfish varieties.

  • Their unique chubby body makes them prone to buoyancy issues, so sinking foods are ideal.

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