Bubble Eye Goldfish - Carassius auratus auratus

Bubble Eye Goldfish (Carassius auratus auratus) is a unique and delicate fancy goldfish known for the fluid-filled sacs beneath its eyes. These sacs, along with its upward-facing eyes and lack of a dorsal fin, give it a whimsical and distinctive appearance. Best kept in calm, specialized tanks, the Bubble Eye is a favorite among collectors of ornamental goldfish.

Description:

Common Name: Bubble Eye Goldfish

Scientific Name: Carassius auratus auratus

Family: Cyprinidae

Size: 4–5 inches

Temperament: Peaceful

Difficulty: Moderate

Native Region:

Selective breeding origin (descended from East Asian varieties)

Aquarium Setup:

Tank Size: Minimum 20 gallons

Temperature: 65–75°F

pH: 6.5–7.5

Hardness: Soft to moderately hard

Decor: Smooth substrate and gentle decorations with no sharp edges to protect delicate eye sacs

Additional Tips:

• Tankmates: Best with other slow-moving fancy goldfish – avoid fin-nippers or fast swimmers

• Diet: Omnivorous – feed high-quality pellets, gel food, and occasional frozen or fresh vegetables

• Behavior: Slow swimmer; prefers calm waters and should not compete for food

• Care Note: Keep water clean and watch for damage or infections to the eye sacs