| fundulus | (n) killifish, Syn. genus Fundulus |
| mummichog | (n) silver-and-black killifish of saltwater marshes along the Atlantic coast of the United States, Syn. Fundulus heteroclitus |
| striped killifish | (n) black-barred fish of bays and coastal marshes of the Atlantic and Gulf Coast of the United States, Syn. mayfish, may fish, Fundulus majalis |