Yes they are. Plenty of websites will give advice.
White Cloud Mountain Minnows (Tanichthys albonubes) are a TROPICAL fish and should be kept at around 64F to 75F. Although they are very tough and can stand being kept in cold water conditions their life span is greatly reduced by being kept at too cold temperatures. They are egg layers and so can not get pregnant.
betas, white cloud minnows, small cleaning shrimp, maybe even a goldfish for a few weeks before it out grows the bowl.
White cloud mountain minnows are not cold water fish, so they may not be suitable for overwintering in a pond in colder climates. They are more suited to warmer temperatures around 64-72°F. It's best to research and choose fish species that are more tolerant of cold water if you plan to keep them in a pond over winter.
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 cold, high altitude cloud
Fish are cold blooded.
When hot water is thrown into the air on a cold day, the water quickly evaporates due to the temperature difference. The water vapor condenses into tiny water droplets or ice crystals, forming a cloud. This happens because the cold air saturates quickly with the water vapor, creating a visible cloud.
goldfish, sometimes minnows and even sometimes guppies and bettas but it depends on the range of temperature
The water vapor in your exhaled breath condenses- it goes from very warm to very cold. The drop in temperature makes the VERY moist exhaled breath condense into water droplets. Those water droplets are visible, just as a cloud is visible.
When you breath out, you breath out some water vapour. This is normally invisible, but cold air cannot hold as much water vapour compared with warm. This causes some of the water vapour to condense in mid air in front of you, forming 'the cloud'!
You can put some but not all cold water fish in tropical tanks for example you can put zebra danios and mountain minnows with tropical if you gradually increase the heat. You cannot do this with goldfish. It depends what fish you have.
When you exhale in cold weather, the warm air from your lungs meets the cold air outside and condenses into tiny water droplets. This condensation creates the visible cloud or mist that you see when you breathe out in the cold.