The first rule of fish keeping is "1 inch of fish needs a minimum of 1 gallon of water" Your 'bowl' is not big enough to keep one fish healthy let alone two and a Betta. Goldfish are coldwater fish and need temperatures around 55F. Bettas are tropical fish and need temperatures around 80F so you can see that they should not be kept together anyway.
Simple answer is NO. They need totally different living conditions. 1 Betta needs a 5 gallon (nominal) tank. Two goldfish need a 25 gallon tank.
It should be fine.
yes, goldfish and betta fish fight.One time I had 2 goldfish and one bit the other one and it killed it.Never have 2 betta fish in the same aquarium or bowl because they will fight right when they get in the aquarium/bowl!
Betta fish are best as a solitary fish and are not compatible with goldfish.
Betta fish don't even think about goldfish they need 10 gallons each. If your bowl is bigger than 1 gallon a betta will do fine. Below 1 gallon get a ghost shrimp or snail
No.
goldfish. Definatly goldfish. Or betta
A small fish bowl is bad for any fish. You need minimal 5 gallon for a single betta. You need minimal 20~30 gallon for a single fancy goldfish, 40~55 gallon for a single common goldfish. Because fish produce ammonia and it is toxic to themselves. Goldfish has such large body mass, so they produce enormous amount of ammonia. You must have a good filter system, and do a nitrogen cycle first before adding any fish at all.
They are Both fish
NO
Betta's or Goldfish.
Yes they can but not betta fish.I (I hope this helps to all of you.)
No, betta fish are tropical fish; goldfish are coldwater fish, this should be reason enough not to mix the two. The mixing of these fish would be irresponsible and could yield distatorous results. One reason not to mix them would be because betta fish are quite small; most don't even reach 1/3 the size of a goldfish (even when full grown!) it makes them very likely to get bullied by the other fish. Fin nipping can be a major problem and is dangerous for the health of the fish. Do all your fish a favor by not mix betta fish with goldfish.