There are 3 results of your search for yellow belly2.
yellow belly1
golden perch: Caught some yellow bellies in the dam.
Contributor's comments: This term is widely used for the same fish in the Murray River NSW/VIC.
Contributor's comments: Yellow Belly for Golden Perch I would have thought to be common throughout at least Eastern Australia. I fish for Yellowbelly in dams and rivers in NSW.
yellow belly2
the red wattlebird, which has a yellow tinted belly.
Contributor's comments: The term "Yellow Belly" is regularly used by local (Melbourne) birdos to refer to the Red Wattlebird (Anthochaera carunculata)
yellow belly3
a fifty dollar note.
Contributor's comments: The $20 note was also called a "redback" and the fifty a "Yellowbelly".