Report Carp dietary requirements and digestive system in UK Bait and Bait Making Posted August 16, 2020 Just now, NC Angler said: That's interesting you mention fish, liver, squid. Since carp are vegetarians, I'm always surprised to hear anglers using fish or squid based baits and attractants. It would be my assumption that this would attract predator fish, not carp. Carp are most certainly NOT vegetarian! They will make the most of the easiest available food source at any point in time. I'd suggest if you want to deepen your understanding of bait, do lots of reading about carp and their diet.