Hi Ed,
Welcome to rabbitfishing society. I salute you for the nice catches and interest. These guys here, they are not expert in rabbitfish, but worst...they're MANIACS (like Johan, Tom, Ichang, Hamzy, etc sorry guys...it's true though)....some of them are about to turn into rabbitfish soon hehehehe...
I believe rabbitfish consider as an omnivore...they eat both veggies and meat. However, type of baits depending on the habitat where they live (some people even use meatballs!), algae remains their main diet (I use algae all the time and it never fails me, so far). If bread works...keep using it. Unless the fish got tired with bread then you must find a new menu hahahaha...
Here, we usually sized the fish by comparing number of our fingers (including thumb) to the fish height (mostly rabbitfish). Perhaps on your next report, you may able show off your biggest catch by how many fingers
(like 10 or 12 fingers?you'll make these guys drooling).
cheers,
Alex