- Scientific name: Bolbitis heudelotii
- Synonym: Gymnopteris heudelotii
- Common name: African fern, Congo fern
- Family: Lomariopsidaceae
- Group: Aquarium plants
- Max height: 40 cm (somethimes 60 cm).
- Distribution: Widely distributed in Africa.
- Habitat: Grows in rivers with very fastflowing water on stones and rocks, occasionally also in the substrate, both submersed and semiaquatic, under shade or full sunlight.
- Substrate: None, attach to wood
- Placement in aquarium: Background, middleground
- Planting density: 1 plant for 20 cm2
- Lighting needs: Bright
- Temperature: 24-26°C
- pH: 6-7
- Hardness: 3-6 NK°
Description: This slow-growing fern produces large, stalked, dark-green leaves with a very solid structure. The plant will attach itself to solid objects, such as rocks and bodwood, and prefers to live in areas of flowing water. The plant is otherwise undemanding and can be kept in wide range of water conditions.
Bolbitis heudelotii is a popular and decorative fern plant. Generally, cultivation is not difficult if the following hints are taken. The species loves soft, acid water with pH-values of about 6.0-6.8, CO2 fertilization has positive effects. If the pH-value is within the alkaline range, leaves will often blacken and become stained. Though Bolbitis can grow well in an aquarium without strong water movement, the plants will nevertheless display clearly improved growth in moving water (e.g., close location to the filter). Moderate lighting is adequate. Vegetative propagation by lateral shoots and rhizome partition is unproblematic. On rare occasions, propagation by adventitious plants was observed. These will develop either directly on the pinnate tips of older leaves or on branchy tissue segments.