We catch them at Grand lake and it's crazy how many zebras are in their bellies. sometimes you can shake them and hear them rattle, when you filet them they spill out all over. Some will have 20 or 30 atleast. Not to be graphic but some have big "rear" holes from passing the zebras and getting cut I assume. I think every blue I've cleaned the last 4 or 5 years down there have had atleast some zebra muscles in them.