魚類學相關名詞中英對照
名詞 定義 
notochord A cartilaginous rod in the embryo that runs from head to tail and supports the nerve cord (cells which lie above the gut and below the nerve cord); in most fishes the notochord is replaced in the larval stage by the developing vertebrae, occupying anterior and posterior cavities, but in some primitive fishes (e.g., coelacanth, hagfishes, chimaeras) the notochord persists in the adult and serves as the vertebral column or 'backbone' of these species.  
脊索 胚胎期的一根軟骨質的竿狀構造,從頭部到尾部支撐著神經索 (位於消化道上方,神經索下方的細胞);大多數魚類在幼魚時期時,脊索藉由發展脊椎骨而被取代,發育成前面與後面的腔,但是在一些原始的魚 (例如,腔棘魚、盲鰻類、 銀鮫類) ,脊索持續在成魚存在,而且被當作椎柱或這些種的 '脊椎' 使用。 
※中文內容系使用機器由英文內容翻譯。