clark4feathers
Aquarium Advice Freak
bought a coral and it has a few brittle stars on it. will they get bigger and leave the coral? will they stay small and cling to the rock?
Wikki said:Brittle stars use their arms for locomotion. They do not, like sea stars, depend on tube feet, which are mere sensory tentacles without suction. Brittle stars move fairly rapidly by wriggling their arms which are highly flexible and enable the animals to make either snake-like or rowing movements. However, they tend to attach themselves to the seafloor or to sponges or cnidarians, such as coral. Their movement has some similarities with animals with bilateral symmetry.