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Unless they are blind cave fish, which have no eyes, fish need light.
You want a light om an aquarium so you can see the fish to best advantage.
It does not need to be a special aquarium light, if a room is light enough for you to move around in, it is light enough for the fish, regardless of temperature.
A weird thing may happen if the light comes from the side. Fish orientate themselves to light more than gravity. With strong side lighting they will swim tilted, sometimes almost completely on there sides.
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Why do you need to acclimatise the water for a fish?
Every fish lives in a different inviroment.If its a tropical fish and the water is to cold it will die.
What type of things would you need to buy for a penguin?
Really cold water! Cold fish! And friends!
What does it mean when a betta fish can move the top part and not the bottom?
Betta fish need to be kept in slightly warmer water, about 80 F. The water on top of the container is often warmer, especially if you have it close to a light source. It may be that the water is too cold.
Do goldfish need cold water or warm water?
Goldfish are "coldwater fish" their comfortable temperature range is 55F to 70F. The stimulus to make them breed is when the temperature rises to over 65F.A gold fish needs cold water.
Do the seahorse live in cold or warm water?
It depends on the fish. tropical fish need warm water, goldfish and koi like colder temperatures. You have to know what kind of fish it is to really answer this one. Ask the people you buy the fish from what temp it needs.
Is a Betta fish cold blooded or hot?
You need to keep a betta in warm water with a temperate of 75-85 degrees. If you keep it in cold water it will eventually get sick and die
Can fighter fish live in cold water?
Siamese fighters (Betta splendens) are a tropical fish and need to be kept at around 78F.
Do trout need saltwater or freshwater to survive?
Trout are fresh, cold water fish that need high oxygen levels.
Do fish need air?
They need oxygen definitely to survive. They get this from filtration through their gills. As far as light is concerned, they do not need light to survive as many live below the layer in the ocean that light can permeate. There are fish that lice in total darkness. They have adapted over the years to exist in these conditions.
What fish can you put in a cold tank?
You can not put tropical fish in coldwayter bevause they need hot water to survive but you can put goldfish in coldwater becaue they are coldwater fish
What type of tropical fish can you put in with goldfish?
None, goldfish are cold water fish, so having a tropical fish as a tank-mate just wouldn't work because tropical fish need to live in warm water.
Do fish need light at night?
no they do not need light they need sleep.
