While doing some aquascaping this morning I noticed a couple of pieces of rubble wedged into one of the larger base rocks pieces I have, and wondering how that could have happened I noticed ... something moving ... so I took the rock out and washed it through with the outflow from the return pump out of the sump ... imagine my surprise when this thing popped out ... now I know where some of the fish disappeared over the past month ... it is approx. 2-3/4 inches across ...
Charles