topminnow
/ˈtɒpˌmɪnəʊ/noun
1- an American killifish, often seen at the water surface鳉。
1.1
- Fundulus and other genera in the families Cyprinodontidae (or Fundulidae) (many species), and Poeciliidae (one or two species).底鳉属, 鳉科（或稻草鱼科）（多种）和花鳉科（1或2种）。