Riccia

Riccia fluitans is a liverwort in the order Marchantiales, naturally distributed as a free-floating plant across temperate to tropical water bodies worldwide. Its use as a submerged foreground carpet plant was pioneered by Takashi Amano, who popularized the technique of tying it over rocks with fine mesh nets to keep it submerged. Under high light and pressurized CO2, photosynthesis generates spectacular pearl-like oxygen bubbles across the entire mat — one of the most iconic sights in the Nature Aquarium aesthetic. Fast-growing but challenging to maintain, the thallus tends to detach from netting and requires regular intervention. Stable water parameters and consistent algae management are prerequisites for long-term success. Its combination of breathtaking beauty and technical difficulty places it firmly in advanced aquascaping territory.

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