Agassiz threw himself into the work with an enthusiasm that would go on to characterize the rest of his life's work. The task of describing the Brazilian fish was completed and published in 1829. It was followed by research into the history of fish found in Lake Neuchâtel. Enlarging his plans, he in 1830 issued a prospectus of a History of the Freshwater Fish of Central Europe. In 1839, however, the first part of the publication appeared, and it was completed in 1842.
Agassiz threw himself into the work with an enthusiasm that would go on to characterize the rest of his life's work. The task of describing the Brazilian fish was completed and published in 1829. It was followed, by research into the history of fish found in Lake Neuchâtel. Enlarging his plans he in 1830 issued a prospectus of a History of the Freshwater Fish of Central Europe. In 1839, however, the first part of the publication appeared, and it was completed in 1842.