/stud"fish'/ , n. , pl. ( esp. collectively ) studfish , ( esp. referring to two or more kinds or species ) studfishes .
either of two killifishes marked with orange spots, Fundulus catenatus (northern studfish) , of the Tennessee and Cumberland rivers and Ozark Mountains region, or F. stellifer (southern studfish) , of the Alabama River.
[ 1880-85, Amer.; STUD 1 + FISH ]