Never saw these silkworms for sale over here.
for what I've seen with feeding Morio worms, that the shell of the worm was too hard to break for the baby Oscars.
If i wanted the O to eat it, I'd break it in two ,before feeding.
I don't know if these larvae are tough in structure.
I fed huge earthworms to my baby O and it looked like he was fighting an anaconda, but he won in the end.
Maybe some other member has tried there pupae.
OHW, silk worm
pupae, you said...
Uhm, this is on top of my tank, i'm sorry i lied, i do know these things,heck, even got them.
Reality check, your O's will crush these and eat them for sure.
They are pretty soft shelled and i used them as a treat for my Koi carp.