Bowfin Caviar is harvested from the natural waterway and is a domestically sourced American black caviar from Bowfin, a bony fish from the Southern US backwaters. ... Bowfin caviar has small-sized pearly grains as like the bowfish.
I did some checking and found pimento cheese called "Carolina Caviar " in several places. And the other stuff also. But I saw the veggie stuff called "Cowboy Caviar" in several places. Might be a regional thing.