Subwassertang clump

Subwassertang — Lomariopsis lineata

Distinctive, versatile, and effortlessly low-maintenance — Subwassertang is a fascinating aquatic liverwort that stands apart from typical aquarium mosses. Its flat, irregularly lobed fronds form dense, lush clumps with a texture unlike anything else in the planted tank hobby. Whether left to float freely, tied to hardscape, or used to create a soft foreground carpet, Subwassertang adapts beautifully to a wide range of aquascape styles.

Plant Profile

• Scientific Name: Lomariopsis lineata
• Common Name: Subwassertang, Round Pellia, Süßwassertang
• Type: Aquatic liverwort (sporophyte stage)
• Origin: Southeast Asia
• Growth Rate: Slow to moderate
• Placement: Foreground, midground, floating, or attached to hardscape
• Difficulty: Easy
• CO₂: Not required, but beneficial
• Lighting: Low to medium

Water Parameters

• Temperature: 20 – 28°C (68 – 82°F)
• pH: 6.0 – 7.5
• gH: 3 – 15
• kH: 1 – 5
• TDS: 100 – 300 ppm

Care & Placement

Subwassertang is one of the most adaptable aquatic plants available. It thrives in a wide range of water conditions and requires minimal intervention to grow well.

• Floating: Can be left to float freely at the surface, providing excellent cover and shade for shrimp and fry
• Attached: Tie or glue to rocks, driftwood, or mesh for a lush, textured hardscape effect
• Carpet: Spread across substrate or mesh panels to create a soft, irregular foreground carpet
• Trimming: Trim periodically to prevent overgrowth and maintain shape
• Fertilisation: Low demand; benefits from occasional liquid micronutrient dosing
• CO₂: Not essential, but improves growth rate and vibrancy

Aquascape & Shrimp Tank Use

Subwassertang is a favourite in shrimp tanks and nano aquascapes. Its dense, irregular fronds provide excellent grazing surfaces for biofilm — a natural food source for shrimp and small invertebrates. The clumping growth habit also offers ideal shelter for shrimplets and fry. A highly recommended addition to any low-tech planted setup.