The conditions required are the same as the from came from which is normal cold water, non salt based.
yes it is
Tropical fish tanks and supplies can be purchased in the New York area at Pete's Fish Place and Absolutely Fish. They carry a wide assortment of tropical fish, aquarium supplies and other requirements for all kinds of fish.
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.
Use a tropical fish tank, preferably new. That way you know that it should not leak. Try to avoid using a tank that was used for something other than tropical fish. I prefer glass tanks over acrylic because they are less likely to mark or look dirty and they are easier to keep clean. Most aquarists will tell you to start off with a small tank and as you enjoy it more and more, you can opt a larger tank. When I started into tropical fish and as I bought larger tanks I used the smaller tank for breeding. Tropical fish tanks and supplies are available in most pet stores that sell tropical fish.
Typically heaters are needed for tropical fish tanks. However, if you could guarantee the room temperature where the tank is located will be maintained at the needed temperature for your fish, then you don't need a heater. Most tropical tanks need to be maintained at temperatures of 72 to 80 degrees Fahrenheit, depending on the types of fish in the tank.
it depends. for most fish it should be pH7-pH8 but some species like it at pH6
It is not recommended. Goldfish are cold water fish while tropical fish are warm water fish. Also, goldfish need to be fed more often than most tropical fish and they produce elevated amounts of waste which can be detrimental to fish not accustomed to it.
if you have livebearers then id say yes but on other tropical fish no
generally a special formulated fish food is sprinkled on the top of the water, and the fish will come to the surface and eat. there are also automated feeders for large tanks.
They can but it's best they don't because can get a common fish disease.
if you have a goldfish, try bi-orbs and hexagon fish tanks. They are available in a lot of different kinds. If you want ones for tropical fish, it is easy to find hexagon fish tanks. just look in a "fish store" or just ask local people. The other means to do this, is to shop for it online. Places like Amazon and eBay have a bunch of different items available.
They do not eat other fish. Someone has been misinforming you. The common name for the "Betta splendens" is the Siamese fighting fish. They are tropical fish and do not come from China. The males of the species will only fight another male of the same species. They are slow moving, quiet and peaceful fish. That is why they are often kept in community tanks.