Some bad shots of my goby...
 

Not sure if he's trying to attack the shrimp or get a cleaning. He does this mouth-open thing when my female clownfish comes by, and it's possible he doesn't recognize the shrimp. They generally hide high up in the tank during the day, and he's under the sand at night.

http://www.lamint.ca/quinn/goby%20be...019%2003/1.jpg

http://www.lamint.ca/quinn/goby%20be...019%2003/6.jpg

http://www.lamint.ca/quinn/goby%20be...019%2003/4.jpg

:cool: You should call him Pavarotti.

:lol: Good one ! Cute little guy (or gal)

Nice :mrgreen:

Looks like a regular old territorial yawn to me.

My two yellow watchens do this sometimes when the cleaner shrimp gets too close to there burrow.

cheers, Rich