the big ones yes , the small like senegalus just play pull until they are reep in edible chunks, here is pic of my palmas eating that one but already no back feet of fight for it whit other bichir
if i remember correctly those dwarf aquatic frogs are actually a part of some of the bichir's natural diet, so they are probably enjoying this froggy treat you give them!
Even though the african dwarf frogs are a natural part of a bichir's diet my girlfriend absolutely forbids me to purchase any because "they're too cute" and she'd leave me. So Trogdor only gets them when my gf is out of town haha
I feed the big ones big bullfrogs and the smaller ones smaller frogs. the problem is usually when the big frogs eat the smaller ones, i use frogs and other live feeders only once a week as a treat to my fishes.