Hello everybody. I'm just wondering how many hours of sleep do fish need? I know for humans it's on average 8 hours per day but how about for fish?
Aren't the number of hours lights are on for mainly for the health of plants? I always wondered whether fish need artificial light at all. Given the conditions most of them come from the bright artificial light we use are way more light that they would have experienced in the wild.
Yes fish do sleep but they have more instinctual body functions happening than humans when they do. Breathing, swim bladder control, pectoral fin control & survival instinct are all instinctual & require no thought on the fishes part. Us humans just need to close our eyes & breathe. The fish is asleep but it can do all of the body functions mentioned above & be aware of danger close by.
In their natural environment tropical fish get about 9hrs of full darkness with a sunrise & sunset changing of the light period either side of that. A minimum of 8hrs lights out is needed IMO & 10hrs is even better.
And what if fish have lights off but there is still light in the surroundings so that in reallity the fish get like 3hours to no time of "absolute darkness".
And what if fish have lights out but there is still light in the surroundings so that in reallity the fish get like 3hours to no time of "absolute darkness".