The Natural History Museum Basel's fish collection includes a global mixture of individual examples of species. The main collection dates from the early 20th century.
The type collection of fish at the Natural History Museum Basel is modest. It dates primarily from the first half of the 20th century. A larger series from 1983 comes from Saudi Arabia.
The type collection includes a total of 45 taxa. The current taxa designations are based on Bill Eschmeyer's 'Catalog of Fishes' from 1998, with updates until 2000 from 'FishBase'.