Common name: Gelidiales

Gelidiales is an order of red algae primarily found in marine environments. Members of this order, such as Gelidium and Pterocladia, are known for their importance in the production of agar, a gelatinous substance widely used in food and scientific applications. In reef aquariums, they can serve as a natural food source for herbivorous fish and invertebrates. These algae typically require moderate lighting and water flow to thrive and can contribute to the overall health of the ecosystem by providing oxygen and removing excess nutrients.

1. 
   Common name: Gelidium Seaweed

   Scientific name: Gelidium microdon
2. Common name: Dwarf Red Algae

   Scientific name: Gelidium pusillum
3. Common name: Red Seaweed

   Scientific name: Gelidium spinosum