章节大纲


    • Name and role of each fin


    • A: dorsal fin → maintain good swimming posture

      B: adipose fin → an important fin in classification, but details of its role are unknown

      C: pectoral fin → maintain good swimming posture

      D: ventral fin → maintain good swimming posture

      E: anal fin → maintain good swimming posture

      F: caudal fin → gains propulsion when swimming


    • Strength of tail fork 网页