heterocercal
/ˌhetərəʊˈsɜːkəl/adjective
- Zoology (of a fish's tail) having unequal upper and lower lobes, usually with the vertebral column passing into the upper【动】(鱼)歪尾鳍的。Contrasted with DIPHYCERCAL, HOMOCERCAL. 与 DIPHYCERCAL, HOMOCERCAL相对。
词源
mid 19th cent.: from HETERO- 'other' + Greek kerkos 'tail'.