21. External anatomy Second Dorsal Fin First Dorsal Fin Nares (Nostrils) Lateral Line Caudal Fin Eye Anal Fin Pelvic Fin Pectoral Fin Operculum (Gill Covering)
22. Internal Anatomy Kidneys Swim Bladder Black Part That Runs Along Spine Gall Bladder Operculum Small Intestine Gills Liver Spleen Large Intestine Pyloric Caeca