Galaxea Coral Care Guide
Galaxea fascicularis · Saltwater LPS Coral
What Galaxea Coral look like
Galaxea fascicularis, commonly known as Galaxea Coral, exhibits a robust and branching morphology characterized by elongated, tubular corallites that can reach up to 30 centimeters in height. The coral's polyps are typically extended during the night, displaying a vibrant array of colors ranging from green to brown, often with contrasting white or yellow tips. Sexual dimorphism is not pronounced in this species; however, individual polyps can vary in size and coloration based on environmental factors. Defensive adaptations include the presence of potent nematocysts within the tentacles, which can deliver a mild sting to potential threats. Unique morphological features include the pronounced septa and the presence of a well-defined coenosarc, which connects the polyps and allows for a degree of interconnectivity among colonies.
Behavior & temperament
Galaxea fascicularis is primarily a sessile organism, exhibiting limited movement; however, it can extend its polyps significantly to capture plankton and small zooplankton during feeding. The coral is known to engage in aggressive interactions with neighboring corals, using its stinging tentacles to defend its territory. In terms of symbiotic relationships, Galaxea hosts zooxanthellae within its tissues, which provide essential nutrients through photosynthesis. This species is generally more aggressive than other LPS corals, often competing for space and resources in densely populated reef environments.
Diet & feeding
In the wild, Galaxea fascicularis primarily feeds on zooplankton and phytoplankton, utilizing its stinging tentacles to capture prey. In captivity, it requires a diet supplemented with finely chopped meaty foods and high-quality coral foods to thrive.
Behind the name
The scientific name 'Galaxea' is derived from the Greek word 'galaxias', meaning 'milky', referring to the color of some species, while 'fascicularis' comes from the Latin 'fasciculus', meaning 'little bundle', indicative of its clustered polyp structure.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Galaxea Coral?
AquaLens identifies your fish and plants from a photo, tracks water chemistry, and flags health issues early — free on iOS and Android.
