In the early 18th century, publisher, bookseller, and apparent fish enthusiast Louis Renard compiled the seminal compendium of color-illustrated ichthyological studies. The volume contains more than 450 species rendered in vibrant hues that, while somewhat anatomically accurate, feature embellishments in color and characteristics. From beak-like mouths to extraordinarily patterned skins, the vast illustrations of marine life are unusual, bizarre, and sometimes psychedelic. One of the most fantastical illustrations even depicts a mermaid (shown below). More