Alex Ploeg, an aquarium hobbyist since the age of six, developed in his hobby by studying taxonomy of tropical fishes at the University of Amsterdam. In 1991 Alex obtained a doctorate in ichthyology from the University of Amsterdam. That same year he became fish breeder in the Netherlands Antilles on Bonaire and later a wholesaler in 1993. Since 1994 Alex was involved in OFI (Ornamental Fish International) as an advisor, and since 2002 as member of the Executive Board. He was appointed Secretary General with effect from the first of April 2004.
Alex, his wife Edith, their son Robert where aboard the Malaysian airlines flight MH17 shot down in eastern Ukraine airspace on Thursday 17 of July 2014.