The collection features detailed, vibrant illustrations of popular exotic aquarium fish species. Each stamp includes the scientific name and year of description next to its Hungarian denomination:
20f: Neon Tetra (Hyphessobrycon innesi)
30f: Paradise Fish (Macropodus opercularis)
40f: Guppy (Lepistes reticulatus)
60f: Siamese Fighting Fish / Betta (Betta splendens)
