Common name: Coralline Algae

Corallinales, commonly known as coralline algae, are an order of red algae that are widespread in marine environments. They are notable for their hard, calcareous deposits within their cell walls, which give them a stony appearance. These algae play a crucial role in reef-building and are beneficial in reef aquariums for their ability to outcompete nuisance algae and provide a natural, attractive look. They come in various colors, including pink, purple, and red, and can encrust surfaces or form branching structures. Coralline algae are important for maintaining water quality and providing habitat for small invertebrates.

1. 
   Common name: Cryptic Branching Coralline Algae

   Scientific name: Amphiroa cryptarthrodia
2. 
   Common name: Lime Green Algae

   Scientific name: Amphiroa fragilissima
3. Common name: Hydrolithon boergesenii

   Scientific name: Hydrolithon boergesenii
4. 
   Common name: Jania rubens

   Scientific name: Jania rubens
5. 
   Common name: An encrusting coralline alga

   Scientific name: Lithophyllum incrustans
6. 
   Common name: Coralline Algae

   Scientific name: Mesophyllum mesomorphum