Do guppies need darkness to sleep

No, guppies don’t need light at night. Guppies need darkness to sleep and rest properly. Having the aquarium lights on all the time may result in poor sleep quality, sickness, and eventually, death. Guppies need six to eight hours of sleep each day and thus, you should keep the lights off for the same amount of time. (source)
The first way you can tell your guppy is sleeping is if they’re laying motionless on the substrate when the lights are off. This is one of the common spots they’ll end up, but it’s not the only one. You should also check through your ornaments and plants to see if your guppies are sleeping in there as well. (source)
Guppies are a type of bony fish and require sleep in order to conserve energy and function. If you leave your aquarium light on 24 hours a day, guppy fish may be unable to fall asleep and will eventually die. (source)
How Much Light Do Guppies Need? Your guppy should be getting between 8-10 hours of light per day. Anything more than that, and you’re going to stress them out, which will weaken their immune system. Likewise, anything less than that will have a similar effect. (source)
How Much Sleep do Guppies Need? Leaving the lights on 24/7 is a bad idea. Guppies need darkness to be able to rest. Having the lights always on might eventually result in dead fish. Sep 23, 2021 (source)
Fish don’t necessarily need complete darkness to sleep, but it’s best to provide them with the amount of darkness they would have in their natural environment. They may sleep when tired if the lights are on, but it will be better for their sleep and overall health if they can rest in darkness. May 1, 2022 (source)
Guppies tend to be top swimmers. This means that they spend most of their time swimming near the top of the tank. They might also sometimes swim towards the bottom, but by and large, they prefer to be at the top. Mar 22, 2022 (source)
Guppies are peaceful fish that enjoy the safety and social aspect of swimming in groups. They are fast, active swimmers, and they spend most of their time exploring and chasing one another. Male guppies enjoy showing off to the females. Jan 21, 2022 (source)
Guppies are not picky eaters and will even graze on algae growing inside the aquarium. We like to give ours a wide variety of foods, such as bloodworms, brine shrimp, flake foods, pellets, and Easy Fry and Small Fish Food. (source)
8,000K White. This is a warmer white light that enhances reds, greens, oranges, gold, and yellow colors in many fish, including: swordtails, platies, guppies, goldfish, bettas, discus, tetras with red colors, rainbow sharks, and albino fish. (source)
Guppies themselves do not need light as such. Having a light on an aquarium just makes life easier for us fish keepers. A light makes observing your aquarium easier and means you can grow live aquarium plants, which in turn creates a better environment for your fish. (source)