它们是一种特殊的鱼类吗？
它们能在江水和海水中生存，并且成熟后洄游到产卵地产卵。[{'character': '它', 'pinyin': 'ta1', 'highest pitch': 7.62, 'lowest pitch': 7.45, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '们', 'pinyin': 'men5', 'highest pitch': 8.09, 'lowest pitch': 7.37, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '能', 'pinyin': 'neng2', 'highest pitch': 7.37, 'lowest pitch': 6.5, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 8.56, 'lowest pitch': 6.66, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '江', 'pinyin': 'jiang1', 'highest pitch': 9.99, 'lowest pitch': 6.66, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '水', 'pinyin': 'shuei3', 'highest pitch': 9.84, 'lowest pitch': 4.82, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '和', 'pinyin': 'he2', 'highest pitch': 14.1, 'lowest pitch': 4.82, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '海', 'pinyin': 'hai2', 'highest pitch': 9.69, 'lowest pitch': 6.56, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '水', 'pinyin': 'shuei3', 'highest pitch': 9.84, 'lowest pitch': 5.6, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '中', 'pinyin': 'zhong1', 'highest pitch': 7.31, 'lowest pitch': 5.6, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '生', 'pinyin': 'sheng1', 'highest pitch': 8.54, 'lowest pitch': 7.26, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '存', 'pinyin': 'cuen2', 'highest pitch': 8.25, 'lowest pitch': 5.72, 'duration': 0.34, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.41}, {'character': '并', 'pinyin': 'bing4', 'highest pitch': 10.2, 'lowest pitch': 9.16, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '且', 'pinyin': 'qie3', 'highest pitch': 9.16, 'lowest pitch': 6.18, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '成', 'pinyin': 'cheng2', 'highest pitch': 10.01, 'lowest pitch': 6.18, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '熟', 'pinyin': 'shu2', 'highest pitch': 10.01, 'lowest pitch': 7.51, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '后', 'pinyin': 'hou4', 'highest pitch': 9.83, 'lowest pitch': 5.91, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.17}, {'character': '洄', 'pinyin': 'huei2', 'highest pitch': 10.32, 'lowest pitch': 7.16, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '游', 'pinyin': 'iou2', 'highest pitch': 10.32, 'lowest pitch': 7.3, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '到', 'pinyin': 'dao4', 'highest pitch': 9.23, 'lowest pitch': 7.06, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '产', 'pinyin': 'chan2', 'highest pitch': 8.43, 'lowest pitch': 6.32, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '卵', 'pinyin': 'luan3', 'highest pitch': 8.43, 'lowest pitch': 5.41, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '地', 'pinyin': 'di4', 'highest pitch': 7.33, 'lowest pitch': 5.85, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '产', 'pinyin': 'chan2', 'highest pitch': 8.43, 'lowest pitch': 5.85, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '卵', 'pinyin': 'luan3', 'highest pitch': 8.43, 'lowest pitch': 4.21, 'duration': 0.41, 'prosody hierarchy': '#4'}]