This is a detailed fish engraving with original hand-coloring by William Home Lizars, a Scottish painter and engraver (1788-1859). It is a page from Sir William Jardines' Naturalist's Library, Published in Edinburgh and London, circa 1840. This is 1. The Hake, 2. The Lung. These are in the Cod family and air-breathing. It is beautifully matted and backed with acid free material. There is a certificate of authenticity on the back. The total size is 9" x 12". Excellent condition.