From my experience with adf
's, if I didn't put the food in front of his face then he wasn't gonna find it. They have pretty bad eyesight and tend to be an ambush predator rather than actively hunting for food. Try putting the food in a different spot, further away from the adf
. Or you could distract the adf
with some of its food and them immediately feed your corys while the frog is distracted. Hope this helps!