cold or warm water fish?

 
Cold or warm water fish?
i was wondering what type of fish can live off of tap water and how i would go about on caring for it
keeping in mind i dont want a fish from the sea
Beta
goldfish and bettas
a betta but don't use tap water guss use water bottle or filleted water

Source(s):

i own bettas
betta guppies goldfish
i love bettas, cold water
they dont need a pump or nuthing
they are awsome