Common name: Species code: hn

General information

Halophila spinulosa, commonly known as Spiny Halophila, is a species of seagrass native to the Indo-Pacific region. It is one of the smaller seagrasses, with short, oval leaves and distinctive spiny leaf margins. This species is not as commonly kept in home aquariums as some other marine plants, but it can be a beneficial addition to a refugium or seagrass tank setup.

Care

Spiny Halophila requires a sandy substrate in which to root and spread. It prefers moderate lighting conditions and a stable environment with minimal fluctuations in water parameters. Regular additions of iron-based fertilizers can promote healthier growth. As with most seagrasses, Halophila spinulosa performs best with a gentle water flow that simulates its natural tidal habitat.

Symbiosis

While not known for hosting or engaging in symbiotic relationships with marine animals like some macroalgae do, Halophila spinulosa plays a crucial role in its natural ecosystem. It provides habitat and nursery grounds for various marine organisms, and in an aquarium setting, it can serve as a refuge for small invertebrates and a grazing area for herbivorous fish.

Habitat

Halophila spinulosa is found in shallow coastal waters, typically in sandy or muddy substrates. It is distributed across the Indo-Pacific, from the Red Sea and East Africa to Southeast Asia, Australia, and the Pacific Islands. In the wild, it can be found at depths ranging from the intertidal zone to about 30 meters.