The Amazon Sword Plant - Echinodorus sp. - is an aquatic plant that has become very popular with fish keepers worldwide over the past several years. The genus name ‘Echinodorus’ is derived from Greek ‘Echius meaning rough husk, and ‘doros’ meaning leathern bottle. The genus Echinodorus comprises of more than 40 species. They can be found in South and Central America. It is very popular with species that can be used as foreground, midground and great background aquarium plants. Echinodorus are by nature marsh and bog plants that can grow submersed. Many species are grown in aquariums. They prefer good light and grow best in a deep, nutrient-rich substrate.