hypural notch The crease formed when the caudal fin is bent or flexed.
尾下骨凹槽当尾鳍被弯曲或弯曲
时候，
摺痕。
hypural notch The crease formed when the caudal fin is bent or flexed.
尾下骨凹槽当尾鳍被弯曲或弯曲时候，摺痕。
hypural bones The fan-shaped series of bones (sometimes fused to one or two plate-like bones) to which the caudal fin rays are attached.
尾下骨尾鳍鳍条附
扇列硬骨(有时融
或二个板状硬骨)。
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