Here is a situation I find interesting. I seldom fish any more, sort of like Heybud, I like to sit around and watch what is going on. Anyway, I get orders for fish from friends, usually at around dinner time, and I usually don't have any bait, so I use bread. That is how I found that the tilapia will hit the crust. After catching the number I need I throw the remaining bread in the water. If the slice is whole or nearly so the pacu will eat it. Half or smaller and the tilapia will get it. Early on, 16 months ago, I caught a few pacu on bread, then none. Nearly the same as the carp and the red/white bobber.
