Not for an extended period of time. They are canibals and soon, you'll have one Angler.
If you're planning on keeping 2, together, I'd suggest moving up to a 40 - 45 gal. or so. That way, you can keep 2 full sized specimens.
Make sure you get 2 of the same species or 2 that look alot alike...and make sure they're the same size.