Oyaishi means “main stone” in this Miroshaki Aquascaping Dictionary. The strongest stone in an iwagumi composition. It is especially useful when you are building the hardscape before planting begins.
Japanese: 親石 Romaji: Oyaishi
Meaning of Oyaishi
Oyaishi is explained here in simple English so beginners can use the word without feeling lost. In Miroshaki style, the term is not only a translation. It is a small way to look more carefully at nature underwater.
How Oyaishi Helps in Aquascaping
Use it as the visual anchor that gives the layout direction. This can help when you choose stones, place wood, create open space, plant moss, or wait for the aquarium to grow into a more natural balance.
Related Miroshaki Dictionary Words
Related terms: Fukuishi, Soeishi, Suteishi, Sanzon Iwagumi, Ishigumi.