I wouldn't try it if it was my own frog.
There may be a possibilitie it contains cold blood tuberculosis.
Mycobacterium tuberculosis isn't something you can get sick on,
but other cold blooded animals (like you're frog) can.
I'd stick with the regular foods, especially since you don't know what preperations are done on the fish before you take it home with you and you can't tell if TBC is present in the piece of fish.
Mycobacterium tuberculosis