Angels will only be aggressive during breeding. You can stick two of them in there.
You can also put a dwarf gourami in there with the angels.
I currently have an opaline gourami in w/ 2 angels in a 60 gallon tank and have never had a problem.
I would recommend tetras with them. Lemons would be good, just be warned diamond shaped tetras can be nippy. Maybe look at rummynose or cardinal tetras, both will be fine, just get young angels.
You can also put a dwarf gourami in there with the angels.
I currently have an opaline gourami in w/ 2 angels in a 60 gallon tank and have never had a problem.
I would recommend tetras with them. Lemons would be good, just be warned diamond shaped tetras can be nippy. Maybe look at rummynose or cardinal tetras, both will be fine, just get young angels.