縁起物の代表格といってもいい鶴と亀。「飛鶴」「雲鶴」「郡鶴」「立鶴」「鶴の丸」など、鶴は鳥文様の中では、最も表現のバリエーションが豊富です。歴史が古いのは亀で、弥生時代の銅鐸などにも見られます。亀は単独で描かれることはほとんどなく、多くは鶴とともに長寿の象徴として表現されています。

The crane and turtle patterns have been used at any happy occasions like wedding in Japan.
Cranes represent longevity since they are said to live for a thousand years in China.
Even in Japan, since cranes have beautiful pure white feathers, and beautiful standing and flying figure, they have been used as auspicious patterns by the upper class and the public.
The turtle pattern is much older than the crane and can be found in crafts made at the Yayoi period.
Turtles are often drawn with cranes rather than alone and are used as a symbol of longevity.

Obi fabrics with this Japanese pattern from the obico selection