Microsorum pteropus and Anubias barteri var. caladiifolia rooted on a large piece of mangrove wood.

Microsorum pteropus is a water fern from Asia, 15-30 cm tall, which should be grown on a root or stone, attached with fishing line until it has gained a hold. If it is planted in the bottom, do not cover the rhizome because it will rot. Easy to propagate by splitting the horizontal rhizome. A hardy plant which grows in all conditions. The black spots under the leaves are sporangia (reproductive organs), not signs of disease as many believe. 

Anubias barteri var. caladiifolia originates from an Australian tissue propagation laboratory. It is a very beautiful variety with heart-shaped leaves. The leaves live for several years, so Anubias barteri var. caladiifolia can easily form large groups despite its slow growth. A group of Anubias barteri var. caladiifolia growing more than 50 cm wide in a few years is not unusual.