From what I remember when my kids had a couple albino african clawed frogs they got big and they eat any fish they can fit in their mouths... and boy did they have big mouths! I'm not sure I'd put them in with any fish. Now the little dwarf african frogs can go in a community tank but be sure the tank isn't too deep as they need to be able to reach the surface for air. They also do better in a groups if I remember right. The only issue with them in a community tank is that you will need to target feed them or the fish will usually gobble up all the food, leaving none for them. A turkey baster or a larger syringe (no needle) will work for that and they catch on real fast that the baster/syringe means food.