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					Originally Posted by teevee
					
				 
				How thick were the arms?  A lot of us have small brittle stars scattered amongst our rocks.  In some cases they seem to have originated from a single source in Calgary, and appear to be a common hitchhiker elsewhere.  Regardless, it has been decided that ours are filter-feeders, and assuming this is what you have, and noting the arm-waving behaviour exhibited by yours, I would expect that this is what you have as well.  Shouldn't be a problem. 
			
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 I have hundreds of those Brittlestars.  The arms are brownish with cream coloured rings, or the other way around.  Whenever I feed the tanks I am greeted with waving arms everywhere.  They live in rocks, zoanthid colonies, and in my Fluval filter foams.  I know I got mine on purpose from Tony. 
  