rocker bone A prominent, median, bean-shaped bone in Ophidiidae and Carapidae which is drummed against the anterior end of the gas bladder for sound production.

• 篦板骨一种存在于鼬鳚科与潜鱼科中突出、中型且为豆状的硬骨，被敲击而抵佳气鳔的前端而发出声音。