This training allowed him enrollment at the prestigious Munich Academy of Fine Arts, where he was mentored by Heinrich von Zügel, prominent in Europe's Naturalist Barbizon School.
His landscapes quickly established him as a Post-impressionist painter at a time when local critics were still partial to Impressionism, however, and this motivated Fader to join other artists similarly out of favor with conservative Argentine audiences, such as Cesáreo Bernaldo de Quirós, the sculptor Rogelio Yrurtia and Martín Malharro (whose earlier, impressionist work had established the genre locally in 1902).
This productive period was cut short by a sudden worsening of Fader's breathing difficulties around 1921, which by then had become chronic asthma and precluded outdoor work.
Though forced into reclusion by ill health, Fader never lost the following he had acquired during his heyday around 1915, and the National Academy of Fine Arts organized a retrospective of his work in 1924.
The Buenos Aires community of art galleries organized a 1932 retrospective of 119 works in honor of Fader's 50 th birthday, by which time he was too ill to attend.