Feeding a malnourished Firebelly toad?

[Sasha]

I don't know much about Fire Belly's but I think a picture will help us see what you are talking about. I wonder if the brown muck is a bad shed and it's preventing him to open his mouth to eat that's why he's afraid of the crickets? Like someone else said, don't leave the crickets in the tank with him they will possibly bite him.

[Sasha]

You're frog needs a vet. It looks like there is some kind of infection on his head.