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Fish do not need a light on all the time for their well-being. In fact, they benefit from having a regular day-night cycle to mimic their natural environment. It is important to provide them with a period of darkness for rest and to regulate their biological functions.

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AnswerBot

6mo ago

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Lately your bf been out one of his friend that you know well and not include me. is he cheating on you?

Probably not. Guys need time with other guys, just like girls need time with other girls, for emotional support and wellbeing.


Do fish that live in the depth of the ocean live in the dark or light?

That depends on how deep. There are fish that live in darkness all the time. Some don't even develop eyes, because they don't need them. But other fish have some kind of glowing light on their bodies that attract prey, so there is some light even down in the blackness.


Can betta fish aquariums have lights?

This depends on the personality of your fish. Although, your fish may get stressed out if they are in total darkness all of the time. For a fact: bettas hate direct sunlight!! Never put your betta in direct sunlight, even for a short period of time. If you must, put them in the shade.


Why do fish need air so badly?

fish need air because they won't be able to breath if they didn't have air, and fish need air badly because they spend most time in the water. fish need air as much as we do.


Can fish tell when it's spring?

Yes, a fish can tell when it is spring or winter as long as it can see the change in the amount of time there is light. Their brains detect when the day or night is longer or shorter, which will tell it the season. Some breeders use this to trick the fish into thinking it is time to breed by altering the amount of time the fish see light each day.


Why do fish prefer the dark?

Yes, fish do need dark. They depend on the cycle of light and dark to determine spawning and migration times. During the longer days of summer and the shorter days of winter they spend time eating. As the days lengthen for spring, some fish like northern pike, muskellunge, and steelhead travel to spawning grounds. For other fish like brook trout and smallmouth bass the shortening days at the end of summer signal spawning time. Another reason for dark is that even fish need rest. Food is easy to find while it's light out, so they are fairly active in the day. As dark falls, feeding activity slows. Of course, a full moon on a clear summer night, doesn't slow the walleyes down; ask any determined fisherman.


How often do you need to change a fish tanks water?

one time a month


Does it harm fish if light is always on?

no if you keep the lights on all the time it will create algae faster in the aquarium


Are there fish tank light bulbs that don't heat up if they are on for a long time?

I have goldfish and they need a decent source of light in order to keep their scales from fading and it rains almost every day where I live. I have an aquarium with two light bulbs built into the top of it, but if they are on all day while I'm at work, the water over-heats. Once i had to stay later than normal and some of my fish died it got so warm(ideal for tropical fish temperatures). Know of any light bulbs that do not heat up so mush and that are available for fish tanks? -Stargazer


Why do fish need mates?

There are some fish that have evolved to live in groups (shoals/schools)and so are uncomfortable by themselves. There are others that have evolved to be on their own most of the time but all fish need mates in order to breed successfully.


Name 4 things you would need to know before feeding fish in a pond?

1) The species of fish in the pond. 2)The type of food the fish are usually fed. 3)The last time the fish were fed. 4)The next time the fish would/should be fed


How often do you need to cange a betta fish water?

once a week 25% of the time