I too used to have crap luck with them. Turns out I was properly acclimating them. I now have 3 fromias and one blue linckia, and all are doing well. Man the linckias do move super fast. 
24 hours acclimation period I used for all my starfish. 
As for the id on the starfish I would go with some form of linckia, although it does look like one of my fromias 
		
	
		
		
		
		
			
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				Starting to put together a new tank for my new place.
			 
		
		
		
		
	
		
		
	
	
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