Huh. Well, thanks for the input. 
I'm pretty sure my fish aren't just randomly dying, I've never had a problem with water chemistry.... and the other fish are completely healthy. Even the clown was perfectly happy and eating, and then I just found him dead the next morning. The others just vanish, but right up to that point are active, and eating. Hrmphh. 
 
Once again I am left to ponder the mysteries of nature. 
		
	
		
		
		
		
		
	
		
		
	
	
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