Ichtyologie, ou, Histoire naturelle, générale et particulière des poissons, A Berlin, Chez l'auteur, & chez François de la Garde libraire, 1785-1797, fishes, Germany, ichthyology, pictorial works, The illustration features two distinct species of fish, each meticulously rendered with attention to detail. On the left, a brightly colored species with a round body covered in vivid patterns of yellow and black, labeled 'Cichlidae maculatus.' To the right, a more elongated fish with an intricate palette of blue, red, and brown scales, showcasing ornate fin details, labeled 'Anacanthus Vailieri.' Below the fish, there are anatomical representations of their respective fins, enhancing the educational aspect of the illustration. The background features faint, handwritten notes, suggesting scientific inquiry and classification of these aquatic creatures.