I have 4 African Dwarf Frogs but not mixed with my fish. I have two males in a 10 gallon and two females in a separate 10 gal
. I've been discouraged from putting fish and frogs together since the needs of the frogs are different than those of fish, especially feeding needs and water parameters.
's aren't great swimmers but they also have bad eyesight. They really can't see well enough to find their food so placing them with fish might mean their food gets stolen by the fish.
I hand feed all of mine to make sure they get enough to eat.
I too have a docile make Betta, in fact he LOVES being with the frogs but because of all the differences in feeding and water params I had to separate them. It's worked out though because my all are doing great!(knock on wood)