Questions about feather dusters and coco worms

[KleineVampir]

Hey guys, I am wondering how these things reproduce. Seems like the info online is ambiguous. I believe I have 2 of the Hawaiian feather dusters. Alternating purple and white color. How exactly do those reproduce?

Also if I got 2 coco worms, could they conceivably reproduce? I want something that can multiply and something that looks good of course...preferably both!

 

[KleineVampir]

Also one of my feather dusters has apparently lost his crown but I've seen him moving around so it looks like he's still alive. Any insight as to what is most likely going on? It is the smaller one and there is a larger one of his species in the tank with him.

 

[Bret Brinkmann]

They sometimes loose their crowns. They can grow back. The last one I had did what looked like releasing eggs into the water. It did die about a week later though. Not sure if these things are related.