The Fancy Brittle Starfish, also known as the Decorator Brittle Starfish, is a popular and attractive addition to marine aquariums. It has long, slender arms covered in small spines, and comes in a range of colors from green to brown and orange. Unlike other starfish, the Fancy Brittle Starfish can drop off an arm to escape predators and will regenerate it over time. These starfish are relatively hardy and easy to care for, but they do require a well-established aquarium with plenty of hiding places and live rock. They will feed on small invertebrates and leftover food in the aquarium, but may also need to be fed specifically with meaty foods such as shrimp or small pieces of fish. It's important to note that the Fancy Brittle Starfish can be sensitive to copper-based medications and high levels of nitrate and phosphate in the water. They also have the potential to prey on small fish and invertebrates in the aquarium, so it's important to consider tank mates carefully before adding them to the aquarium.