Water Sprite Common name: Water Sprite Scientific name: Ceratopteris thalictroides Origin: Southeast Asia Maximum height: 24" Placement: Background Propagation: Adventitious plantlets pH: 6.2-7.6 Temperature: 70-82F Light requirements: Low CO2 Requirements: Low Growth rate: Very Fast Care level: Easy Kingdom: Plantae Family: Pteridaceae Genus: Ceratopteris Species: C. Thalicteoides Also known as: Floating Sprite, Water Fern, Indian Fern, Water Fern, Water Hornfern.