"腹鳍"是个多义词，它可以指腹鳍（鱼的器官）,腹鳍（飞机部件）。
n. ventral
misc. pelvic fin ; ventral fin
多数细长的无鳞海水鱼，有大的胸鳍和退化的腹鳍。
Elongated mostly scaleless marine fishes with large pectoral fins and reduced pelvic fins.
皇室蓝：鱼身深蓝无杂色。有时腹鳍尖端有白或黑斑。
Royal blue : deep dark grain-flower-blue without other colour portions. The ventrals may have white or black peaks.
背鳍、脂鳍和尾鳍稍带浅黄色，胸鳍、腹鳍和臀鳍灰白色。
Dorsal fin, tail fin and fat fins slightly yellow, pectoral fin, and ventral fin Tunqi gray.
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