Look that the hands - - if there is webbing between the hands then it is a dwarf. If there is no webbing and only 4 fingers then it is a clawed which can and will eat your betta and will need a much bigger tank than a dwarf.

Please, in the future research your pets before you buy them. Most frog owners do not encourage even dwarfs to be kept with fish, even bettas, due to the fact the frog is often not fed enough or the proper diet. These frogs have such poor vision that they are nearly blind, as a result they have to find their food by scent - - hard to do with a fast moving betta with keen eyesight in the tank. Bettas are known pigs and chances are your frog might not get his fair share of food.