Fissidens is a genus of aquatic mosses in the family Fissidentaceae. These mosses are commonly known as fissidens moss or pocket moss, and they are found in a variety of aquatic and terrestrial habitats worldwide.
Fissidens mosses have a feathery, delicate appearance, with small, densely packed leaves that form rosettes or mats. The leaves are often arranged in a spiral pattern, which gives the moss its distinctive appearance. Fissidens mosses are important in aquatic ecosystems as they provide cover and habitat for fish and other aquatic animals.
In the aquarium hobby, Fissidens mosses are highly valued for their attractive appearance and their ease of care. They are often used to create natural-looking aquascapes, and their delicate, feathery structure can add a sense of depth and complexity to the aquarium. Fissidens mosses prefer moderate to high light intensity and nutrient-rich water. They can be attached to rocks or wood in the aquarium using fishing line or aquarium-safe glue, and they will slowly grow and spread over time. Some popular species of Fissidens in the aquarium hobby include Fissidens fontanus and Fissidens nobilis.