Green Brittle Star

[demosthenes8]

I've had my starfish for about a year and he's always been active and healthy. When I woke up this morning, his arms were gone. He's basically a torso, albeit a healthy looking torso.
I have a 55 gallon reef tank with very good and stable water parameters, seven fish, basic clean up crew, and about 12 corals. I spot feed the star about once a week with a small piece of frozen shrimp.
Any ideas?

 

[clarkiiboi]

I am very limited on star info, but do know a sudden change may cause this. Did you just do a water change? Anything different?

 

[bot587]

Is there any chance one of the fish became aggressive towards the star (clowns defending anemone...etx)???

 

[demosthenes8]

You never know with the clown fish, but they've co-existed peacfully in the tank for about a year.
My little green torso still looks healthy and strong today. I spot fed him some live blood worms but he wasn't all that interested. Poor guy.