Common name: Spiny Gelidium

General information

Gelidium spinosum, commonly known as Spiny Gelidium or Red Algae, is a species of red algae that is often found in marine aquariums. It is appreciated for its vibrant red coloration and its ability to add a natural and diverse element to the reef tank. This species is part of the Gelidiaceae family and is known for its rigid, cartilaginous thalli that are often branched and can form dense mats.

Care

Spiny Gelidium is relatively easy to maintain in a reef aquarium, provided that it receives moderate to high lighting and some water movement. It is not particularly demanding in terms of nutrients, but it does benefit from a stable environment with consistent water quality. It can be attached to live rock or allowed to drift in the tank.

Symbiosis

While not hosting a wide range of symbiotic relationships like some corals or anemones, Gelidium spinosum can provide shelter and food for small invertebrates and microfauna within the reef tank. Its dense structure can be a refuge for copepods and amphipods, which in turn can serve as a natural food source for fish and other inhabitants.

Habitat

In the wild, Gelidium spinosum is typically found in intertidal zones and shallow waters where it attaches to rocks and other hard substrates. It is a widespread species and can be found in various oceanic regions around the world. In the aquarium, it can adapt to various depths as long as lighting conditions are met.