He studied zoology in Innsbruck and Hamburg, where he received his doctorate in 1934.
In the same year, his book Tropische Fische was published in the field of aquaristics, as well as numerous articles in relevant specialist journals.
His main activity was as a scientific ichthyologist at the Hamburg Zoological Museum.
For several years, Ladiges was editor of the popular aquaristic magazine TI – Tatsachen und Informationen aus der Aquaristik, which was published by the accessories manufacturer Tetra in Melle, Germany.
Werner Ladiges was buried in Ohlsdorf Cemetery, his resting place is in grid square AB 44 between Chapel 9 and the Prökelmoor.