1. Please only post a question to one forum. Serves no purpose to post in multiple forums.
2. Crickets- once the pacu is adult, it can probably eat pinhead crickets... but they're not very nutritious.
Frozen Bloodworms- Sure.
Dead frozen bloodworms? Frozen bloodworms are dead, so I'll say see above.
Live bloodworms- Sure, but not sure there you would get them.
Peas- Green peas, english peas, they look like this.
Pacu will eat nearly anything, but they do need some vegetable material in their diet.