Microsorum Pteropus 'Trident' also known as Trident Java Fern. The name 'Trident' tells that the plant leaves are tripartite, while the leaves can vary from whole to multipartite. Trident Java Fern is an aquatic fern from southeast Asia. Trident Java Fern is a beautiful addition to any freshwater aquarium. Trident Java Fern can be attached to driftwood or rocks just like any other varieties of Java Fern.