Salviani taught at the University of Rome until 1568, after which he was chief physician to the House of Farnese and three successive popes, Pope Julius III, Pope Marcellus II and Pope Paul IV.
"Salviani’s work was published in parts over a period of three years. Its use of copper engraving was well-suited to depicting fish, and greatly superior to woodcuts with its lifelike rendition of eyes and scales. The copper engravings have a scientific appearance, but some details, like the correct number and position of the scales were omitted. Nicolas Béatrizet probably designed the title-page and the fish illustrations were made by Antoine Lafréry. Another theory is that they were drawn by the Italian painter Bernardus Aretinus and engraved by Nicolas Béatrizet. Salviani's Aquatilium animalium (1554-1558) only deals with animals personally observed and handled by him. He noted that cephalopods were distinct from fishes. He collected most of the fishes for his studies from the market in Rome" (Wikipedia article on Hippolito Salviani).
Digital facsimile from Biodiversity Heritage Library at this link.