Found it about 5 minutes after feeding my fish. It's the thing coming out of the rock
http://i.imgur.com/f5uc4.jpg
http://i.imgur.com/Zqjnn.jpg
http://i.imgur.com/Tp0Aa.jpg
http://i.imgur.com/cmwwF.jpg
http://i.imgur.com/f5uc4.jpg
http://i.imgur.com/Zqjnn.jpg
http://i.imgur.com/Tp0Aa.jpg
http://i.imgur.com/cmwwF.jpg