Printer, bookseller and publisher. He was also a cantor in a progressive synagogue. One of the initiators of the organization of the Jewish Theater in Krakow. He ran a Hebrew printing house at 62 Grodzka Street, which was later taken over by his son Maurycy and transformed it into a job printing house. The famous Jewish philosopher Achad Haam published his monthly “Hasziloach” at Fiszer’s. Some volumes of the Bible were also pressed here, translated from Hebrew into Polish by Izaak Cylkow. Many outstanding artists and scientists published their works there: dr. Klausner or Maltera Cincinnati and others. Famous Jewish writers, such as Szolem Alejchem or Szolem Asz, came to him. Over time, other publishers moved here.