| Scientific Name: | Nuphar japonicum |
| Common Name: | Japanese Spatterdock |
| Substrate: | Rich, with clay |
| Lighting: | Bright |
| pH value: | Not critical |
| Hardness: | Not critical |
| Temperature: | 54-77oF (12-25oC) |
| Height: | 24 in (60 cm) |
| Distribution: | Japan and adjacent islands |
| Characteristics: | Fleshy petioles up to 12 in (30 cm) or more in length arise from a creeping white rootstock up to 1.5 in (3.8 cm) in diameter. Petioles bear roundly arrow-shaped pale-green leaves. |
| Aquarium use: | Specimen Plant |