Check this out

[reefpeeper]

SO I'VE BEEN SEEING THIS HAPPEN FOR A LITTLE TIME NOW AND MY WIFE FINALLY GOT A PIC TODAY. WHAT YOU GUYS THINK? IS THIS SOMEWHAT COMMON?

 

[ahayes13]

yes it is fairly common. shouldnt really bother the clam. sometimes as said in another post sometimes if the clam is big enough they will get inside.

 

[seafansar]

Just be careful the clam doesn't close on the clown. I saw a pic of that before, not pretty. My neon goby and tailspot blenny would sit on my clam, but it never really seemed to mind. I guess the clam would have to be spooked before closing on a fish, since they seem to tolerate it pretty well.