Ranunculus inundatus is native to eastern Australia, where it inhabits slow-moving and still freshwater pools, creek margins, and seasonally inundated floodplains. It belongs to the buttercup family and is one of the few Ranunculus species successfully cultivated as an aquarium plant. Its most distinctive feature is the finely lobed, umbrella-like submerged leaves held on elongated petioles, giving each plant a delicate, dancing quality as water movement causes the leaves to sway. In the aquarium it is used as a foreground or low-midground plant where this movement can be fully appreciated. It grows to about 15 cm in height, taller than most carpet plants, but its open, airy structure does not block light from lower-lying plants. Ranunculus inundatus prefers cooler water than most tropical aquarium plants, performing best below 24°C, which makes it ideal for subtropical, temperate, or unheated room-temperature setups. At warmer tropical temperatures its growth slows and leaves may deteriorate. It spreads gradually through the substrate via runners and occasional adventitious plantlets, building a loose but distinctive ground cover. In cooler tanks it pairs beautifully with Vallisneria, Java Fern, and coldwater mosses.
