I've had my diamond goby for almost a year now, and hes become a big part of my family. He jumped today, for no reason whatsoever. I've never heard of this happening, before I got him I did tons of research about jumping fish, and Diamond gobies weren't any... Any idea what could have caused him to jump? Its not tank mate issues, he's paired up with 2 of the 6 fish in the tank (not including him), and the other fish are so peaceful. They are 2 juvenile clowns and 2 PJ cardinals. None of them mess with each other - ever. The only invertebrate I can think of that could have caused it is my tiger pistol shrimp, but thats pushing it. He once paired up with my YWG, who's paired with a Tiger pistol shrimp, and then they became a trio. Maybe it could have been my sea urchin, but its like 2 inches wide. Any ideas..?