Backgrounds

[Fishead]

I have a black background on my tank and I see alot of my fish swim at it with their mouth open, and they stay against the glass for a little while... anyone else have this prob or know why they do it? :drink:

[jonah]

They're probably displaying to their reflections.

[jimez]

A black background could create a mirror effect in side the tank from the light on the glass. They see what they think is another fish of their same type and will try to prove dominency.

[jimez]

jonah, we answered at the same time I was wondering why after I keyed enter it took awhile to accept it. At least we are in aggrement.