Calico Shubunkin Goldfish (Carassius Auratus) - Tank Bred

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Calico Shubunkin Goldfish are one of the most iconic and time-tested goldfish varieties in the hobby. Known for their flowing fins and striking calico coloration, each fish displays a unique blend of blue, red, orange, black, and white that continues to develop as they mature. Tank bred for hardiness and adaptability, these goldfish are active, resilient, and well suited for both ponds and large aquariums.

Shubunkins are constantly on the move, exploring their environment and interacting with tank mates. Their bold patterns and confident swimming behavior make them a true focal point in spacious setups where they have room to grow and thrive.

What We Love About This Fish

Their calico coloration is never the same from one fish to the next, making every individual unique.
They are hardy and forgiving, making them an excellent choice for hobbyists with experience keeping goldfish.
They are active swimmers that bring constant motion and presence to larger aquariums or ponds.
They are long lived fish when given proper space and care.

Natural Habitat

The original goldfish species was first domesticated in East Asia, where it inhabited slow moving ponds, lakes, and calm waterways. The Shubunkin variety was later developed through selective breeding to emphasize its calico coloration and flowing fins.

Aquascaping

Shubunkin Goldfish do best in open layouts that prioritize swimming space.

Plants should be hardy and well established, as goldfish may nibble or uproot delicate species. Anubias and Java Fern attached to rocks or driftwood are good options. Substrate choices such as smooth gravel or sand help protect their fins and mouths while foraging.

Hardscape should be minimal and smooth, allowing the fish to move freely without risk of injury. Botanicals can be used sparingly, but clarity and oxygenation are more important than tannins in goldfish systems.

Diet and Feeding

Shubunkin Goldfish are omnivores that thrive on a varied diet. High quality sinking pellets or goldfish-specific foods should make up the base of their diet, supplemented with blanched vegetables and occasional frozen or live foods. A varied feeding routine supports healthy growth and vibrant coloration.

Tank Mates and Compatibility

These goldfish are peaceful and do best with other similar sized, cold water fish. Avoid housing them with aggressive species or much smaller tank mates that may be outcompeted for food.

Shrimp Compatibility 

No. Shubunkin Goldfish will eat shrimp if given the opportunity.

Breeding

Shubunkins can breed in captivity, especially in pond environments where seasonal temperature changes encourage spawning. Breeding is possible in large aquariums but is considered uncommon for most home setups.

Recommended Tank Parameters

Temperature: 60 – 72°F
pH: 6.5 – 8.0
KH: 4 – 12
Minimum Tank Size: 75 gallons for a small group, larger preferred

Care Guidelines

Diet: Omnivorous with a need for variety and plant matter.
Social Behavior: Peaceful and best kept with other goldfish.
Origin: Tank bred.
Average Adult Size: 8 – 12 inches.
Average Purchase Size: 2 – 3 inches.

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