Phrynobatrachus tokba — Tokba River Frog
The frog pictured in the top two photos here was very small, maybe a hair over half an inch long. The frog pictured in the bottom photo was extremely small, almost hard to see. Notice that it is dwarfed by a nearby small cricket. I thought these looked like Phrynobatrachus, but couldn't guess a species. Ghana frog expert Caleb Ofori Boateng thought it might be Phrynobatrachus tokba, but couldn't tell for certain from these photos.