malacopterygian /ˌmæləˌkɒptəˈrɪdʒɪən/

• 1.  

  ADJ（形容词） of, relating to, or belonging to the Malacopterygii, a group of teleost fishes, including herrings and salmon, having soft fin rays 软鳍类的; 包括鲱鱼和鲑鱼，鳍条柔软
• 2.  

  N（名词） any malacopterygian fish; a soft-finned fish 软鳍类的鱼; 软鳍的鱼