Are you looking for a new type of moss for your higher-light fish tank? Fissidens fontanus has a really nice feather-like shape and grows tightly. It prefers more light then most common mosses you'll find, but like other moss, you should attach it to a surface to allow it to best grow. We have it for sale pre-attached to mesh squares, so you can allow it to grow into a carpet, or attach it to a new surface to grow. What moss is your favourite? | April's Aquarium