Isoetes lacustris grows on lake beds, usually completely submersed in the water and often overlooked. The water must be reasonably clear to allow Isoetes to grow on the lake bed and most known locations are of oligotrophic lakes (i.e. of low productivity) with slightly acid water.
- Common Name: Octopus Plant
- Family Name: Isoetaceae
- Native To: Southeast Asia
- Lighting: Moderate
- pH: 6-8
- Growth Demands: Moderate
- Growth Form: Upright
- Growth Rate: Medium
- True Aquatic: Yes
- Placement In Tank: Midground
- Available As: Bareroot