killifish

名词 killifish:

1. small mostly marine warm-water carp-like schooling fishes; used as bait or aquarium fishes or in mosquito control

kil.li.fish

n.（名词）
【复数】 killifish 或 kil.li.fish.es
Any of numerous small fishes of the family Cyprinodontidae, including the guppy and mosquito fish, inhabiting chiefly fresh and brackish waters in warm regions.
鳉鱼：属于鳉科的许多种小型鱼，包括虹鳉和蚊鱼，主要栖居在温暖地带的淡水和咸水中

来源：
Perhaps kill 2
可能为 kill2
fish
fish