any of various small killifishes of the genus Cyprinodon, found mainly in brackish or fresh water in southwestern US and northern Mexico, and in coastal areas around the Caribbean
pupfish in American English
(ˈpʌpˌfɪʃ)
US
nounWord forms: pluralˈpupˌfish or ˈpupˌfishes
any of several small, nearly extinct killifishes (genus Cyprinodon) found in desert springs of W North America