For a short while. They are an active, cold water fish that require plenty of room and cool oxygenated water. That's difficult to achieve in a one gallon container. A five gallon aquarium would be much better, with at least ten gallons being preferred.
A 20-gallon tank can comfortably house around 6-8 white cloud minnows.
Any well balanced flake food for tropical fish will do.
Only if they are white cloud minnows.
Yes, almost all shops sell guppies and nearly all of them sell white cloud minnows.
If by minnow you mean the "white cloud mountain minnow" (Tanychthys albonubes) then they are old at around 2-3years.
She can buy some little fish that will eat the mosquito larvae. I have White Cloud Mountain minnows.
Whitecloud Mountain Minnows are egg layers.
No, but some tank mates you can consider if your betta is in a 10 gallon tank are neon tetras, rasboras, white cloud minnows, or even some ghost shrimp.
You could put in more goldfish. You could also try some White Cloud Mountain Minnows. If you want a Algae eater then you could get one or two Chinese Algae eaters.
Yes they are. Plenty of websites will give advice.
Some types of fish that can live peacefully with minnows include danios, guppies, neon tetras, and white cloud mountain fish. It's important to choose fish that are similar in size and temperament to minnows to prevent any aggressive behavior or conflicts in the aquarium. Always research the specific needs and compatibility of different fish species before adding them to a tank with minnows.
2 twice a day for each of them.