


Coral Profile
Galaxea
Galaxea fascicularis
Also known as: Crystal Coral, Galaxy Coral, Starburst Coral
SPSintermediate
Type
SPS
Difficulty
intermediate
Light
medium
Flow
medium
Notes
Star-burst polyps on a calcareous tube base, superficially beautiful and beginner-friendly to keep. EXTREMELY aggressive: sweeper tentacles extend over 12″ at night, longer than any Euphyllia. Isolate to its own corner with at least 12″ of empty water in every direction.
Compatible Neighbors
Corals compatible with Galaxea
Every coral below passes the reef-compatibility engine when placed alongside Galaxea. Verdicts account for stinging sweepers, wandering anemones, and overgrowth pressure. Cautions mean you can still keep both but should plan placement (frag plugs, separate rockwork, sight breaks).

Green Star Polyps
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Pulsing Xenia
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Discosoma Mushroom
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Zoanthids
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Duncan Coral
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Birdsnest Coral
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Montipora Capricornis
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Bubble Tip Anemone
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Maxima Clam
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Toadstool Leather
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Kenya Tree Coral
ExcellentNo sting, sweeper, or overgrowth conflict recorded.

Devil's Hand Coral
ExcellentNo sting, sweeper, or overgrowth conflict recorded.
Photo: Stan Shebs / Wikimedia Commons · Source · CC-BY-SA-3.0