<a href=showthread.php?s=&postid=9244586#post9244586 target=_blank>Originally posted</a> by anjhof
What size is your tank? If he is a sifter goby, he'll filter out the critters that live in your sand bed. As long as you have a decent amount of critters in your sand and live rock, he'll be fine. I assume he also eats anything you feed your tank, right? I have a sifter goby, looks similar to yours, but not exactly. Mine is a pig. If you try to catch him, good luck. Mine is like catching a bullet! He looks so slow, but when it is time to put a net around him, off he goes.