<Li> emarginate: or with a slight inward curve . </Li> <Li> continuous: with dorsal, caudal and anal fins attached, such as in eels </Li> <Li> The anal fin is located on the ventral surface behind the anus . This fin is used to stabilize the fish while swimming . </Li> <Li> The paired pectoral fins are located on each side, usually just behind the operculum, and are homologous to the forelimbs of tetrapods . A peculiar function of pectoral fins, highly developed in some fish, is the creation of the dynamic lifting force that assists some fish, such as sharks, in maintaining depth and also enables the "flight" for flying fish . In many fish, the pectoral fins aid in walking, especially in the lobe - like fins of some anglerfish and in the mudskipper . Certain rays of the pectoral fins may be adapted into finger - like projections, such as in sea robins and flying gurnards . The "horns" of manta rays and their relatives are called cephalic fins; this is actually a modification of the anterior portion of the pectoral fin . </Li>

Where is the liver located in a fish