Dead Bearded Dragon Rescue, Trying to See What Happened

[Hugsplox]

You're gonna have some difference of opinion here, and honestly I hesitated to even comment on this because the bearded dragon community can sometimes be a little toxic when we disagree on things. Please understand that I'm not a vet, and that it's been awhile since I kept these animals.

I don't think it's yellow fungus. I've seen it in beardies before, and I suspect that yours is just a morph that looks yellow. As far as your dragon getting impacted from 5 dubias, depending on the size he could very well have choked when trying to eat them depending on the size. The sand in his mouth is also concerning because it's possible that while choking he just got a bunch of sand on top of the roaches. This doesn't mean that that's what happened, just a suggestion. I was always very careful with the amount and the size of feeders with these guys. They're typically kind of aggressive feeders, and will overeat if you let them.

Lastly and this is where a disagreement might occur. I DO NOT recommend keeping dragons in enclosures that are entirely sand. I did let my dragons have dig boxes, but the rest of the enclosures were the enclosure mats that Zen Habitats sell. If you go on other forums researching dragons the "pro vs anti-sand arguments" are numerous, but my opinion is if you're just letting feeders loose on the sand for your dragon to hunt, they're going to eat the sand too and that can lead to impaction.