noun
topminnow
Refers to small freshwater fish of the family Fundulidae, often used in mosquito control. The cross-reference 蚊絶やし (kayayashi) suggests a connection to mosquito larvae predation.
See also: 蚊絶やし
タップミノーはボウフラを食べることで知られている。
Topminnows are known for eating mosquito larvae.