Fishbone Fern (Thin) (Nephrolepis cordifolia) is a graceful fern characterized by its long, narrow fronds with slender, alternating leaflets arranged in a pattern resembling the spine of a fish. The fronds are finely textured and arch elegantly, creating a light, feathery appearance. Also known as Narrow Sword Fern or Erect Sword Fern, it is native to tropical and subtropical regions of Asia and Australia and has naturalized in many other warm, humid climates.

This species often grows in forest understories, rocky slopes, and along streambanks, where it thrives in filtered light and moist conditions. The “thin” form emphasizes its airy, delicate structure, making it ideal for light, ornamental use in gardens and interior spaces. Fishbone Fern spreads by both spores and underground tubers, contributing to its resilience and adaptability. It is often used in tropical-style landscapes, valued for its soft, cascading form and ability to create lush, verdant groundcover or edging.