Pieter Bleeker

Dutch medical doctor, ichthyologist and herpetologist (1819–1878)

The Atlas Ichthyologique des Indes Orientales Néêrlandaises, published in 36 volumes between 1862 and 1878, remains a definitive account of East Asian fish species. Compiled by Dutch medical officer Pieter Bleeker, this monumental study contained over 1,500 illustrations, documenting extensive ichthyological research conducted during his long military tenure throughout the Dutch East Indies.

Military Service and Scientific Collection

Born in Zaandam in 1819, Bleeker entered the Royal Netherlands East Indies Army in 1842. Stationed in the Dutch East Indies until 1860, he balanced his medical duties with intensive zoological investigation. He established a vast network of government contacts and local fishermen to procure specimens, ultimately amassing a collection exceeding 12,000 items. Many of these biological samples now reside at the Naturalis Biodiversity Center in Leiden.

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Taxonomic Contributions

Bleeker authored more than 500 scientific papers during his career. His taxonomic output was prolific, encompassing the description of 511 new genera and 1,925 new species of fish. Beyond ichthyology, he contributed to herpetology, describing at least 14 reptile species, notably in his work titled Reptilien van Agam. His expertise earned him honorary doctorates from Leyden University in 1846 and Utrecht University in 1849.

Institutional Recognition and Later Life

Upon returning to the Netherlands in 1860, Bleeker continued his scientific output and institutional engagement. He became a member of the Royal Netherlands Academy of Arts and Sciences in 1862, having served as a correspondent since 1855. His service was acknowledged through various international honors, including the Officers' Cross in 1856 and the Légion d'honneur in 1864. He died in The Hague on 24 January 1878.

Fast facts

Questions readers ask

Where is the Bleeker collection housed?

Many of his collected specimens are held at the Naturalis Biodiversity Center in Leiden.

How many fish species did Bleeker describe?

He described 1,925 new fish species and 511 new genera during his career.

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