Goldfish

Goldfish are hardy coldwater fish that grow bigger and messier than most people expect, so they need far more filtration and space than a bowl. Single-tail types like commons and comets are fast and grow large, while the round fancy varieties such as oranda, ryukin and ranchu are slower and more delicate. Each profile lists adult size, tank size and the care a variety needs.

13 species

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  Black Moor

  Carassius auratus

  7.9 in (20 cm)25 gal (95 L)61–75°F (16–24°C)

• 

  Bubble Eye

  Carassius auratus

  5.9 in (15 cm)20 gal (75 L)64–73°F (18–23°C)

• 

  Celestial Eye

  Carassius auratus

  5.9 in (15 cm)20 gal (75 L)64–73°F (18–23°C)

• 

  Comet

  Carassius auratus

  11.8 in (30 cm)50 gal (190 L)39–75°F (4–24°C)

• 

  Common goldfish

  Carassius auratus

  7.9 in (20 cm)24 gal (90 L)39–82°F (4–28°C)

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  Crucian carp

  Carassius carassius

  11.8 in (30 cm)119 gal (450 L)39–75°F (4–24°C)

• 

  Fantail

  Carassius auratus

  7.1 in (18 cm)20 gal (75 L)59–73°F (15–23°C)

• 

  Lionhead

  Carassius auratus

  7.1 in (18 cm)25 gal (95 L)61–75°F (16–24°C)

• 

  Oranda

  Carassius auratus

  9.8 in (25 cm)30 gal (114 L)61–73°F (16–23°C)

• 

  Pearlscale

  Carassius auratus

  7.1 in (18 cm)25 gal (95 L)64–75°F (18–24°C)

• 

  Ranchu

  Carassius auratus

  7.1 in (18 cm)25 gal (95 L)61–75°F (16–24°C)

• 

  Ryukin

  Carassius auratus

  7.9 in (20 cm)25 gal (95 L)61–73°F (16–23°C)

• 

  Shubunkin

  Carassius auratus

  11.8 in (30 cm)50 gal (190 L)39–75°F (4–24°C)