adj.為產(chǎn)卵順流而下的

Usually at a definite stage in the life cycle, e.g. anadromous, catadromous, diadromous, amphidromous, potamodromous, oceanodromous. 通常在生命周期的時(shí)期，例如溯河洄游產(chǎn)卵，降海洄游，河海洄游的，河海兩域洄游的，河川洄游，海洋洄游。

dromous Running in a direction, used with prefixes for describing fish migratory habits, e.g. anadromous, catadromous. 迴游的描述魚類遷徙的習(xí)慣，例如溯河洄游產(chǎn)卵或降海洄游。

catadromous fish 降河魚