If you keep a freshwater aquarium or freshwater shrimps ... Instead, it is a slow-growing filamentous macroalgae species that occurs in a very few cold freshwater lakes in the Northern Hemisphere.

returning the ball to filamentous algae. The research group from Kobe University and other institutes grew a marimo with a diameter of 15 cm and a thickness of 4.1 cm in an aquarium for about 290 ...