1.旗鱼;姥鲛
1.a warm-water ocean fish with a large high dorsal fin resembling a sail and an elongated upper jaw that projects forward like a spear.
1.The long bill of marlins, sailfishes, and swordfish probably helps them slip through the water.
马林鱼,旗鱼,剑鱼这些鱼的长嘴很大程度上帮助他们在水中穿梭。