Most small tropical fish wont bother your dwarf frog.
Though I have seen my guppies and platys harrass them a bit when its feeding time.
The ADF isnt very smart when it comes to eating, they have a hard time getting to the food before the other fish eat it all.
You dont want to house your ADF with anything that would eat it.
Oscars, cichlids, pretty much any fish that could fit the frog in its mouth is a no no.
Sometimes you can get away with housing them with male betta's.
Depends though.
Some male betta's "will" kill it, yet others will leave them alone, its a chance you take and dont know what will happen until you try.
Better not to try then to try and have a dead ADF.
I found out that mine doesnt like frogs the hard way!