[kil-ee-fish] 
) -fish, (especially referring to two or more kinds or species) -fish⋅es. | 1. | any of several small, oviparous cyprinodont fishes, esp. of the genus Fundulus, found in salt, brackish, and fresh waters. |
| 2. | any of several livebearers. |
| kil·lie (kĭl'ē) n. A killifish. |