Julio, mine (@ 3and1/2inches) will take the end off my finger if i do not move it quickly enough while feeding. he will eat the same foods as my other fish. As for availabilty in Rich, va. I have seen maybe 2 in the last couple of years ( one of them is now mine) and I frequent most of the lfs. I have read on reef central and been told that they are good for keeping clams free of parasites. I do know that ,during the daylight hours, small snails and pods don't stand a chance! at night my tank has too many to count. any way I was told they have been sold