Are Betas Compatible With Goldfish?

I know there are certain fish that betas can be compatible with but I was wondering if the goldfish know as "telescope" with the bulging eyes would get along with my male beta in his 5 gallon tank. I've heard to stay away from fish with the long flowing fins but I just wasn't sure if their tails... show more I know there are certain fish that betas can be compatible with but I was wondering if the goldfish know as "telescope" with the bulging eyes would get along with my male beta in his 5 gallon tank. I've heard to stay away from fish with the long flowing fins but I just wasn't sure if their tails were long enough to be of concern.

First time tank owner just looking for a little help.
Thanks guys!
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