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PlanteasyFreshwater

Süsswassertang

Lomariopsis lineata

Family: Lomariopsidaceae

Ask Finn

Often mistaken for a moss, Süsswassertang (German for 'freshwater seaweed') is actually a fern prothallus — the juvenile phase of a fern. It produces small, bright green, tear-drop-shaped cells that cluster into irregular clumps or sheets. Grows slowly and does not need to be attached — it can float freely or be loosely placed on hardscape. Very popular in shrimp tanks and nano setups due to its low-maintenance nature and the intricate hiding spaces it creates for juvenile shrimp.

Keeping this species

co2
Not required
light
Low to medium
max size
Clumps up to 5–10 cm
placement
Foreground, surface, or floating
substrate
None — free-floating or loosely draped on hardscape
growth rate
Slow

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Water it likes

ph
6.0–7.5
notes
Thrives in shrimp tanks. Does not attach; simply place on hardscape or let float.
hardness
0–10 dGH
temperature
149–180°F (65–82°C)

Stats

Community tips0
Growing in0 tanks