Goldfish do not need their tank light on for more than 6 hours. Unless you have a lot of live plants in your tank, leaving the light on for a long time will result in an increase in algae in your tank. If you begin to see an algae bloom, then you're best to leave the light off for several days.
no.
a week because the fish can die if you don't leave it long enough
Traditionally, kids in America will leave out cookies and milk for Santa.
leave a gap
No.
The long strand that is coming from your goldfish is poop.
The goldfish and spawn need to be separated immediately spawning has finished otherwise the spawn will be eaten. I used to remove most of the spawn rather than moving the fish.
The goldfish will eat the mosquito's larvae before they can leave the pond and fly.
First, leave the bag with the fish in it floating at the top of the tank. Leave it there for thirty minutes for the goldfish to get used to the water temperature, then you can put it in the tank.
12 hours of light 12 hours of dark
Yes. Goldfish are naturally used to being in light and may suffer if they are kept in the dark for long periods of time. It is best to get them a light designed for aquariums.
The female lays eggs, which are fertilized outside the body of the female. Goldfish do not have sexual intercourse.