In real life the leedsichthys was almost 100% a filter feeder. If we get an update saying it’s then tamable, there should me no way to force feed it and it can only eat by swimming with its mouth open.
When I was going to herbivore island I ran into two of these that were right next to each other. I only survived by staying next to the shore, they stay out in open water so doing this is safe. Make this higher for new players