Elongate fishes with pelvic fins and girdle absent or reduced.
长鱼，没有骨盆鳍和带状物，或已经退化。
Elongated mostly scaleless marine fishes with large pectoral fins and reduced pelvic fins.
多数细长的无鳞海水鱼，有大的胸鳍和退化的腹鳍。
Most species are small bottom dwellers with a weak suction cup formed by the fusion of their pelvic fins.
大部分为底栖鱼，特征是具一个由腹鳍愈合而成的吸力不强的吸盘。
Flying fish rely on a similar flow of accelerated air from their pectoral fins to provide lift to their smaller pelvic fins.
同样，飞鱼借助胸鳍所产生的加速气流，就可以对较小的腹鳍产生一定的提升作用。
Once airborne, they use long pectoral fins and shorter pelvic fins on the sides of their bodies to create lift, much like the wings of an aircraft.
达到空中后，他们利用身侧的长胸鳍及短腹鳍产生升力，类似于机翼。
Bottom-dweller of warm western Atlantic coastal waters having a flattened scaleless body that crawls about on fleshy pectoral and pelvic fins.
大西洋西部温暖水域的底栖鱼，身体扁平无鳞，靠胸爬泳。
Ventral (or pelvic) fins correspond to the hind limbs of a quadruped.
腹鳍对应着四足动物的后肢。
Ventral (or pelvic) fins correspond to the hind limbs of a quadruped.
腹鳍对应着四足动物的后肢。
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