London shubunkin

A short single tail with blue-grey, red and black calico colour

London shubunkins retain the common goldfish body and short tail with calico colouration. Check tail shape rather than colour when separating them from comet-shaped shubunkins; they also lack the Bristol form’s broad heart-shaped tail.

Adult length

About 10 cm

Lifespan

Up to 30 years

pH

7–8.4

Hardness

5–19 dGH

Natural habitat

Wild habitats include rivers, lakes, ponds and ditches, often in vegetated still or slow water; ornamental goldfish are domesticated forms.

These are active goldfish that grow beyond their shop size. Plants may be disturbed or eaten; calico colour does not establish planted-tank or shrimp compatibility. Swimming and feeding ability vary among forms. Provide filtration, oxygenation and maintenance.