Shark internal - Shortfin mako internal Ommanney, F. D. and the Editors of TIME-LIFE BOOKS, 1973. The Fishes. Page 86.
Shark external - Shortfin mako external http://www.floridafishandhunt.com/articles/wildlife-information/fish-identification/saltwater/florida-fish-records.htm.
Spiny-rayed fish internal - Largemouth bass internal Ommanney, F. D. and the Editors of TIME-LIFE BOOKS, 1973. The Fishes. Page 46
Spiny-rayed fish external - Largemouth bass external http://www.lrn.usace.army.mil/op/cor/rec/images/fish/LargemouthBass.jpg Soft-rayed fish internal - Rainbow trout internal http://content.cdlib.org/xtf/data/13030/wc/kt438n99wc/figures/caljsiol_sio1ca175_107_034.gif
Soft-rayed fish external - Rainbow trout external http://www.usbr.gov/mp/ccao/field_offices/new_melones/images/activities_rainbow_trout.jpg