Do fish like the light on?

Aquarium fish do not need light and it is best that you turn it off during the night. Leaving the light on can cause stress to fish as they need a period of darkness to sleep. Too much light will cause algae to rapidly grow and make your tank look dirty.
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Do fish like light in their tank?

While fish do need light, which can be sunlight, fish in your aquarium do not need direct sunlight. Placing your aquarium in direct sunlight is something you want to avoid for good reasons. Direct sunlight is so strong and contains a lot of energy, which will be harnessed by algae to grow like crazy.
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Are fish OK in the dark?

Most tropical aquariums require at least 12 hours of darkness every day, whereas cold-water aquariums require more, meaning you should only illuminate fish tanks for 8–12 hours each day. Fish living in aquariums require 12-16 hours of darkness every day.
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Do fish need their lights turned off?

The short answer is No – you SHOULD NOT leave the aquarium light on overnight. Fish require both light and darkness to survive. Like most other animals, fish need darkness to rest. The fact that they lack eyelids makes them require a sufficiently dark environment for them to get in any kind of sleep or rest.
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Do lights bother fish?

Bright light also helps enrich the color of the fish. 3 Bright light helps darken the pigments of many fish, making them stand out. For the discus hobbyist; don't buy into the myth that discus doesn't like brightly lit tanks.
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Do fish need lights?



Will fish sleep with light on?

Aquarium fish do not need light and it is best that you turn it off during the night. Leaving the light on can cause stress to fish as they need a period of darkness to sleep. Too much light will cause algae to rapidly grow and make your tank look dirty.
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Can Too Much light hurt fish?

Too much light isn't only bad for plants, but it's bad for fish. That's because it causes stress and prevents them from being able to sleep.
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Do fish like blue light at night?

No, you should not keep a blue light or any other colored light on in your fish tank through the night. Unless you have nocturnal fish, they depend on light cycles to maintain their sleep cycle. Leaving a light on at night will disturb this cycle and result in sleep-deprived and stressed fish.
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How many hours of darkness do fish need?

You should also provide your fish with plenty of covered areas within the aquarium to have places to go to and feel safe while they are resting. The general recommendation is that you leave the lights in your aquarium on for 12 hours at most and then switch them off the rest of the time.
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How long do fish sleep for?

Scientists believe that most fish have regular sleep schedules just like humans and other animals. Most aquarium fish are diurnal, meaning they move about during the day and rest at night. However, some species are nocturnal and prowl at night, spending daylight hours sleeping in a cave or crevice.
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Can fish see humans?

Summary: A species of tropical fish has been shown to be able to distinguish between human faces. It is the first time fish have demonstrated this ability. A species of tropical fish has been shown to be able to distinguish between human faces.
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Can a fish survive in milk?

Fish have evolved over many millions of years to survive in water with a certain amount of dissolved oxygen, acidity, and other trace molecules. So, though skim milk is nine-tenths water, it still would be entirely insufficient to support a fish for long.
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Do fish like to be pet?

Groupers are not the only fish that enjoy being petted, it seems. According to videos on YouTube, other species of fish that appear to like the interaction include koi, cichlid and discus fish.
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How many hours should fish tank light be on?

How long should I keep my aquarium lights on? To provide animals and plants the lighting they need, 10 to 12 hours a day is sufficient. Installing a timer or purchasing a unit with integrated timing can make lighting easier––just set it and forget it.
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Can I leave my aquarium light on 24 7?

You should never keep your aquarium lights on for 24/7. There are are several reasons you should not do so but the most important is it will cause algae growth in your tank. And you can spend literally weeks if not months to clean out algae from your aquarium. Besides, just as we do fish also require darkness to sleep.
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What color light is best for fish?

Tropical, or Colour-Lite bulbs, are designed for fish viewing. These accent red and blue hues, and are ideal for making your fish stand out better. They will give a much brighter visual, and mean that you see your fish more clearly and get the best out of them.
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Can fish in an aquarium see you?

A new study says, Yes, it probably can. Researchers studying archerfish found the fish can tell a familiar human face from dozens of new faces with surprising accuracy. This is a big, big deal. It's the first time fish have demonstrated this ability.
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Can I cover my fish tank with a towel at night?

During winter, you should insulate your tank and all filtration by wrapping them in blankets, towels or cardboard. 1 Don't forget to cover the top of your tank, but make sure you do not cut off the oxygen supply. Resist the urge to frequently check your fish.
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Do fishes sleep?

While fish do not sleep in the same way that land mammals sleep, most fish do rest. Research shows that fish may reduce their activity and metabolism while remaining alert to danger. Some fish float in place, some wedge themselves into a secure spot in the mud or coral, and some even locate a suitable nest.
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Are LED good for fish?

Adjustable light intensity: LED lights can be dimmed and programmed, allowing for a natural dimming at sunset and the reverse at sunrise. This is particularly good for nocturnal fish, as a dim blue light can be left on the tank to simulate moonlight and allow for feeding and viewing purposes.
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Is white light good for fish?

Apart from a fish's preference, you might want to choose lights based on how they make your fish appear as well. Certain lights really bring out the vibrant colors of a fish, while others work against them to make them appear dull or pale. The most common colors for aquarium lights are blue, red, and white.
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Do colored lights affect fish?

Picking the right color spectrum has the ability to showcase and intensify the best hues in both your fish and your plants. A fish-only freshwater tank doesn't require lighting for many purposes besides illuminating the tank, and essentially any color spectrum can be used safely without harming your fish.
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Do LED lights heat fish tanks?

LEDs don't transfer heat into the aquarium, but they do generate a fair amount of heat upward and excessive heat can dramatically degrade the lifespan of an LED chip. That's why it's very important to keep them cool.
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Should aquarium filter always be on?

It is not a good idea to turn off your aquarium filter every night. The filter plays a key role in the health of your tank, and shutting it down for hours at a time can eventually lead to problems.
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How often should I feed my fish?

For the most part, feeding your fish once or twice a day is sufficient. Some hobbyists even fast their fish one or two days a week to allow them to clear their digestive systems. Larger, more sedentary fish can go longer between meals than smaller, more active fish.
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