Guide Updated

Koi guide topics are now organized by section.

The old general Koi page has been folded into clearer topic paths: care, varieties, health, pond planning, history, and buying guidance.

Water quality, feeding, breeding, disease prevention, symptoms, quarantine, and treatment decisions.

Kohaku, Sanke, Showa, Ogon, Utsuri, Bekko, Asagi, Tancho, Longfin, and more.

Pond types, filtration, construction materials, aquatic plants, and maintenance access.

Chinese carp culture, Niigata selection, Nishikigoi development, and global hobby culture.

Behavior, body shape, skin quality, pattern balance, and seller questions.