Good comets seem to be rare these days, having been more popular 10-20 years ago; not many are presented at shows now. Comets need pointed tail lobes, as in an open pair of scissors, and the tail and its carriage are the most important features of the type. They are fast swimmers and do well in ponds.

Comets were probably first produced in USA (or possibly in Europe). They are known as swallowtails in the Far East.


The comet standard is as follows:

The fish should be bright and alert. The body should be long and slender with a smooth outline. The caudal fin should be long, deeply forked, well spread without drooping or overlapping.

Metallic fish may be self-coloured (red, orange, yellow, blue, brown or black) or variegated (any combination of red, orange, yellow, blue, brown, black and white) in a pleasing pattern similar on each side. Quality fish will have high colour intensity and metallic shine extending into the fins.

Calico fish should have a blue background with patches of violet, red, orange, yellow, brown and white, spotted with black. Quality fish should have a high intensity of colour evenly distributed over the body, with colour, especially black, extending into the fins.

Ideal profiles are illustrated below:

comet standard, side view comet standard, top view



Mature adults, self-coloured red metallic

red comet red comet red comet

Red comet shown at BAS 2004.

red comet red comet red comet

Red comet shown at BAS 2001.

Mature adults, self-coloured yellow metallic

yellow comet 2008 yellow comet 2008
yellow comet 2007 yellow comet 2007
yellow comet 1999 yellow comet 2004

Self-coloured metallic yellow comets are less common than reds. The top fish was shown at BAS 2008, the centre fish at BAS 2007 and the bottom fish at BAS 1999 (on the left - the camera caught the fish with tail folded) and 2004 (on the right).

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