Brittle star function?

[Reef_at_Sea]

When I did my temperate tank transfer, I think I saved about a thousand... It just never ended... For a week I would stir up the gravel/sand and more would start climbing the glass. But I think they be like RBTA's the first one may be expensive, but your next 100 are free....

I had alot of them in my previous tank, but my current tank for some reason doesn't have any or barely any.
Never noticed one.

 

[Louis Z]

My lfs had been sent two green brittle stars . They didn’t want them nor did they want to sell them to anyone who didn’t know what they were getting . I paid 6for each . I actually loved them and kept them in a tank with mostly larger fish .I would hand feed them . They could zero in on my hand with shrimp and swim up to the surface and literally wrap their arms around my fingers and eat . I could tell when they had eaten enough because their main body would be plump with food . I knew when they wanted to eat because the plumpness would shrink . . There were small fish in there but the gobies were too smart to ever go under their umbrella stance . I eventually moved them to a 20 gal from a 50 gal tank . One morning I came in and noticed the smaller one had his arm detached . Wasn’t sure what was wrong . All the parameters were good . I did a water change anyway . Well several days later all the other 4 arms were detached while the larger serpent was fine . . Well I heard they can regrow their arms so I fed him by placing food directly under his mouth . Well days later I came in the morning before lights on, the larger one was literally on top of the other . The smaller didn’t survive . I assume it was warfare . I really enjoyed feeding them . Watching a serpent star swimming is pretty cool . They were always out in the open , never hiding . The kids got a kick out of it wanting to see them eat .