Do fish sleep

[Henry_VCG_]

I was wondering if fish sleep. I know that some do, i've seen my guppies sleeping...

 

[tstenback]

I dont know if they truly sleep but if i sneak up to my tank early in the morning the cabomba plants look like bunkbeds for platies

 

[Angry_Platy]

My platies sleep with their heads at the top of the tank, at a 45deg angle...I know they are asleep as when I walk past they ignore me....very unusual!!! And then when they do see me they freak out and go all skittish!!