Looking at reflection?

[HouseCookie]

I have a 29 gallon tank, with 3 fish, all lake mawalian (sp) african cichlids.

1 acei
1 Red devil
1 electric yellow

Half of my tank is rock, the other half is sand. Tonight I noticed that my acei is over in the sand, and real close to it, and it appears that he/she is swimming as hard as he/she can at the glass. It starts up against it, so it's not like its getting a run at it. It throws sand around which looks cool. Is it seeing it's reflection and trying to get at itself?

Is there anything I can do/should do?

Also, is my tank overstocked? The guy at the fish store told me I could probably get up to 6 in my tank. They are all probably 2 inches long, and seem to get around pretty well. They chase eachother some, but don't really bite at eachother.

 

[RTR]

The reflection which you see looking through the front glass at the side glass is not visible to the fish in the tank - it is an artifact of looking through one piece of glass at another which is angled to the first. The fish is trying to swim through an invisible barrier, the glass.

 

[Holly9937]

One of my balas do that, It makes me feel bad, Poor guy, but like you said hes not getting a running start so it shouldn't be a problem!!