Sharp lights.

[devonjames]

I know about the one factor which really causes aggression in fish.The sharp lights.I saw many people who has kept their tanks in sharp lights and the sharp light effect the senstive ratina of fish.So keep your tank away from this.
http://blogs.afterabc.co.uk/abbot/

 

[snakeblitz33]

I think I just lost a few brain cells...

 

[btldreef]

Can you give some actual facts to this? Or is this opinion?
Yes, when acclimating a fish to a new system, it's advised that the lights are off. But bright lighting in most of our tanks is necessary (corals) and what reef fish are used to in the wild.

 

[raptor72]

I don't know, he might be on to something. I work midnights and I hate it when the blinds are open when I'm home. It makes me cranky.