Clownfish wants to sleep in my background

[integral9]

I setup my 30 gal with a nice background picture from pet-not-so-smart full of anemones and rock formations. When the lights go out, my Maroon Clownfish tries to swim into the background, specifically the bubble anemones in the picture. I imagine trying to nest for the night. It scares me a bit since he's right up near the surface underneath my filter where he could possibly jump out of the tank (at just the right angle) and it's the only place I couldn't cover since it's HOT filter) Also he's like this all night long:

I don't think this is normal but I was wondering if y'all think I should change out the background. I feel bad for the little guy. He tries so hard to get into the picture.
background: Put in clownfish wednesday last week. He's the only fish inthe tank right now. But I was going to add my shrimp from my old tank this week, since I am taking it down.

 

[integral9]

Well he seems to have figured out that he can't get into the picture and found a nice piece of rock to call home. The background also confused my cleaner shrimp when I put them in. I begining to think this is going to happen to all the fish I put in there.

 

[xdave]

I had a 9 year old boy customer when I worked at a store, (guess which one) He decided to use a real cool shark poster for a background. His fish totally freaked out.

:scared:

:scared:

 

[alyssia]

Originally Posted by xDave
I had a 9 year old boy customer when I worked at a store, (guess which one) He decided to use a real cool shark poster for a background. His fish totally freaked out.

:scared:

:scared:

 

[chris57]

just use a plain blue or black background.