swim bladder

音标发音

Indeed, the world’s 37 species of seahorse are fish, breathing through gills and using a swim bladder to control their buoyancy.
事实上，世界现存37种的海马是鱼类，他们用腮呼吸，用鱼鳔控制他们在水中的沉浮。
Many fish larvae hatch without fully formed pectoral fins and all hatch without a swim bladder, so similar problems could occur for them.
很多小鱼孵化出来时，胸鳍还没有完全成形，而且所有的鱼孵化时都还没有形成鱼鳔。所以，它们可能会面临相似的不善于游泳的问题。
New species include a camouflaged gecko, a fanged frog and a fish called the Henamo grunter, named because it makes grunting noises from its swim bladder.
新发现的物种包括一种善于伪装的壁虎、一种赤蛙以及一种称为赫那莫石鲈（Henamo grunter）的鱼，之所以起这么一个英文名是因为这种鱼的鱼鳔（swim bladder）会发出一种呼噜呼噜的声音。

an organ like a bag inside a fish that holds air so that it does not sink and stays in the correct position