
Pectoral Fins: On fish with a symmetrical tail, the pectoral fin is higher on the side of the body and often is held flat against the side of the body. Pectoral fins are homologous with forelimbs and are paired (one on each side of the body).
Pectoral Fins: On fish with a symmetrical tail, the pectoral fin is higher on the side of the body and often is held flat against the side of the body. Pectoral fins are homologous with forelimbs and are paired (one on each side of the body).