A Back's grayling and a cross-section of its gill. Coloured etching by J. Curtis. https://www.rawpixel.com/image/13967560/image-cross-animal-public-domainFree Image from public domain licenseEight different species of fish, including cod, haddock, halibut and mackerel, are lying on a beach. Coloured etching by J.… https://www.rawpixel.com/image/13965903/image-person-beach-seaFree Image from public domain licenseZeven vissen (1634) by anonymous, Adriaen Collaert and Claes Jansz Visscher II https://www.rawpixel.com/image/13777931/zeven-vissen-1634-anonymous-adriaen-collaert-and-claes-jansz-visscherFree Image from public domain licenseZes vissen (1634) by anonymous, Adriaen Collaert and Claes Jansz Visscher II https://www.rawpixel.com/image/13778226/zes-vissen-1634-anonymous-adriaen-collaert-and-claes-jansz-visscherFree Image from public domain licenseA fish of New South Wales. Etching by P. Mazell after D. Butler. https://www.rawpixel.com/image/14020939/fish-new-south-wales-etching-mazell-after-butlerFree Image from public domain licenseFishing: people smoking herrings and sardines; pots and nets for trapping them. Etching, ca.1762, by R. Benard after L.J.… https://www.rawpixel.com/image/13974894/image-cartoon-person-airplaneFree Image from public domain license