the right pectoral fin moves in conjunction with the left pelvic fin, for example. And their movement is extremely dexterous. They scull the water like oars and can rotate through 180°.

Within this section is the pectoral fin, which is located near the gills, and the pelvic fin, which may have a more specific name depending on its position in the ventral region. The bottom fin at ...

Beyond their useful pectoral fins, all have unevenly forked tails, with the lower lobe longer than the upper lobe. Many species have enlarged pelvic fins as well and are known as four-winged ...