1, Ganoid fishes swarmed during the earlier geological periods.

2, Sturgeons and gars are ganoid.

3, Any of various large, ganoid freshwater and marine fishes of the family Acipenseridae of the Northern Hemisphere, having edible flesh and valued as a source of caviar and isinglass .

4, Primitive ray-finned freshwater fishes of North and Central America and Cuba. Characterized by elongated jaws and heavy ganoid scales.

5, Its body is covered in an armor plating of diamond-shaped , enamel-coated ganoid scales, and it's been said that this shining armor can produce sparks when struck by an axe.