Do fish sleep

[Lawplanet]

yo. how long should ii leave the tank light on for? and... is it good for the fish to have the tank completely dark?
btw. one of my fish keeps on sitting at the bottom of the pool... but when you go near it, it'll swim away. i don't know what's going on. maybe he's lazy?

 

[Thomas A. Anderson]

what kind of fish is it? Some fish spend most if not all their time on the bottom.

And yes, fish do sleep

 

[Tropicalfishfn]

Thats what i thought yeah they do sleep people told me they don't cause they have no eye lids but that dosn't matter if people can sleep with there eyes open well so can fish and when i turn my light on there all at the bottom and don't move for like 20 sec

 

[semper fi]

it's not reccommended to leave the lights on continuously. can encourage algae to grow and can cause the fish to stress.

maggie

 

[Tropicalfishfn]

I keeep my tank on all day then when i go to bed i turn it off so are you saying i should turn it on and off all day ?

 

[superman]

I have a regular "heavy duty" house light timer on all of my tank lights (can get them at any hardware store), I have the tank lights set to be on for 12 hours and off for 12 hours. I have adjusted the timer to turn on the lights so that the 12 hours that the lights are on is within the same time frame that I would be likely be awake and wanting to see and enjoy my fish. This way, my schedule doesn't conflict with my fishes' sleeping schedule and stress my fish out. My schedule is always changing, and some nights I am not even around to turn off the tank light, thank God for my light timers!

 

[CFC]

I use timers also but i use mine to simulate sunrise/sunset (well sort of) because i have 5 tubes for my tank a set them so that they come on in the morning one at a time at half hour intervals,they stay on for ten hours and then start to go off at half hour intervals.I find that the fish prefer this set up and even the nocturnal fish i have come out at "dusk".

 

[superman]

I have wanted to do that exact same thing, but i don't currently have that many lights on my tanks...maybe someday