<p class="ql-block">今天我们来观察一条鲈鱼</p> <p class="ql-block">这是鱼的头部</p> <p class="ql-block">这是鱼的躯干</p> <p class="ql-block">这是鱼的尾部</p> <p class="ql-block">这是鱼的侧线</p> <p class="ql-block">这是胸鳍</p> <p class="ql-block">这是腹鳍</p> <p class="ql-block">这是臀鳍</p> <p class="ql-block">这是背鳍</p> <p class="ql-block">这是尾鳍</p> <p class="ql-block">这是鱼鳃</p> <p class="ql-block">这是鱼鳔</p> <p class="ql-block">谢谢观赏</p>