Most whales have ctenoid teeth.
大部分的鲸鱼都有栉状的牙齿。
body covered with ctenoid scale, lateral line absent, two dorsal fins, pelvic fin fused to form elongated suction disc.
体被栉鳞，无侧线，背鳍两个，腹鳍愈合成长吸盘状。
ctenoid Having the margin toothed like a comb used to describe the free margins of the scales of some fishes, as in perciformes.
栉鳞边缘有梳状齿的鳞片用来描述某些鱼类的鳞片特徵。
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