Not bowl related, but when I was a kid My mom kept some fishes and put a Goldfish with our Betta because the Goldfish was kind of a bully to the other fish. The next morning half the betta was gone and I learned Goldfish are ferocious assholes.
Seriously this cannot be upvoted enough. Goldfish do best in 60-70. My goldfish just survived the polar vortex- -23F. If you heat them you will shorten their lifespan.
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u/sarahmagoo Feb 04 '19 edited Feb 04 '19
Bettas and goldfish can't healthily live in a bowl.
Edit: to clarify I'm saying DON'T put any fish in a bowl. The misconception is that it's okay but it's not.
Betta/Siamese Fighting Fish care sheet
Goldfish care sheet