Yes.
A Siamese fighting fish/betta? Yes! They cannot survive in salt water.
Well beta or Siamese fighting fish have no gills so they surface breathe ..
No Gold fish like water around 65F Siamese fighters need around 75F. They are totally incompatible.
They need a 5+ Gallon tank and you can only have one in the same tank.
Siamese fighting fish do sleep. They are the same as all fish. When fish sleep they don't close their eyes because they don't need eye lids to protect their eyes, instead they just rest on the bottom of the aquarium with their eyes open.
Innately, Siamese fighting fish fight and just need practice with stregnth and agility. You can train them by dangling a blade of grass into the bowl and jurking it away when they come close. make sure you do this in a bowl that is big enough so that you do not force it to bump into the walls and weaken itself.
because it has dropsy or bloating. You need to get some meds for it.
fresh water
Siamese fighting fish prefer water temperatures of 24-30 degrees Celsius, or 75-86 degrees Fahrenheit.80 degrees or so, they are tropical and live in rice patties through out Asia. They should have a heater in tank and not be kept in tiny glass bowl at least a 5gallon tank would be best with at least 3 femal bettas
Siamese fighting fish can eat mosquito larvae, microworms, daphnia and so on, but if you want to go with pellets; I have had the best results from "new life" brand pellets the product is called Spectrum small fish formula.
Most pet shops that stock tropical fish will be able to get you a female 'Betta splendens'. (that's its' correct name). I would advise you not to use the name 'Chinese fighting fish' 'Cos they may not know what kind of fish you mean since they do not come from China. If you really want to call it a 'Fighting Fish' then use the name 'Siamese Fighting Fish'. Most folks will understand that.
I don't recommend it. Mollies can get larger than a Betta (Siamese Fighting Fish) and be far more bullish than a Betta. A Betta could easily get beaten up by Mollies! Mollies need a minimum of 20 US gallons anyway.