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Grosvenor Tropicals fully endorsees the OATA's policy on the humane  treatment of livestock. We may refuse any sale where we believe that a customer cannot provide a suitable environment for care of that species.

We do not supply Goldfish for use as prizes at Fetes, Fun Fairs or other events.


Known in the Far East as Swallowtails, Comets are perhaps the second most popular of all the Goldfish varieties. Comets were probably first produced in USA, and although very similar to the common Goldfish, do have some distinctive differences according to the breed standard, most noticeable, their longer flowing fins.

Again I am grateful to the acknowledged experts of the Bristol Aquarists Society for the definitive breed standard.

  • Depth of body to be between 3/7ths and 3/8ths of body length
  • Pectoral and pelvic fins to be paired, dorsal and anal fins to be single
  • Caudal fin to be single, deeply forked and well spread
  • Length of dorsal lobe of caudal fin to be greater than 3/4 of body length
  • Extremities of fins to have a pointed appearance
  • At least 25% of the body to be blue in calico fish
  • Minimum body length to be 7.5 cm (3 inches)

A wider colour variation is also acceptable, metallic (self-coloured or variegated in a pleasing pattern and similar on each side) or calico. Metallic colours should appear as burnished metal, extending into the fins. Calico fish should have a blue background with patches of violet, red, orange, yellow and brown, spotted with black.

Sarasa Comet Goldfish