There are up to two dorsal fins but no anal fin. It is currently fished mainly for its fins (for shark fin soup). These are bony fish with paired rounded fins. Their caudal fins and anal fins are sharply concave. Blue sharks are light-bodied with long pectoral fins. The pectoral fins are short and rounded. They usually have dark stripes extending from nose to in front of their dorsal fins. The humpback has a distinctive body shape, with long pectoral fins and a knobbly head. The large, flexible pectoral fins allow the fish to decelerate quickly. They are roomy, with tastefully restrained, period use tail fins and chrome. The marlin has two dorsal fins and two anal fins. Control is by forward rudders with large rear fins. These fishes move by using sweeping movements of their large pectoral fins. There is usually no ridge between the dorsal fins. There is no ridge between the dorsal fins.