39. (c) Clinton & Charles Robertson, some rights reserved (CC BY)
40. (c) Michael McDonough, some rights reserved (CC BY-NC-ND)
41. (c) Matt Tillett, some rights reserved (CC BY-NC-ND)
42. (c) Gibbons, Ruth E., some rights reserved (CC BY-NC-SA)
43. (c) Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes, some rights reserved (CC BY-NC-SA)