[stuhd-fish] 
) -fish, (especially referring to two or more kinds or species) -fish⋅es. | 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. |
| stud·fish (stŭd'fĭsh') n. pl. studfish or stud·fish·es Either of two small, brightly colored topminnows (Fundulus catenatus or F. stellifer) of the southeast United States. [stud1 + fish.] |