Common name: Galaxy Coral

Galaxea is a genus of stony corals known for their intense, often green or brown polyps that extend well beyond their skeletal base, giving them a 'galaxy' appearance. They are aggressive corals with sweeper tentacles that can sting neighboring corals, so they require careful placement in the reef aquarium. Galaxea corals are photosynthetic, hosting symbiotic algae called zooxanthellae, which assist in their nutrition. They thrive in moderate to high lighting and water flow, and benefit from supplemental feeding of planktonic foods.

1. 
   Common name: Octopus coral

   Scientific name: Galaxea astreata
2. 
   Common name: Octopus coral

   Scientific name: Galaxea fascicularis