|Family||Scientific Name||Author||Year||Common Name|
|Fundulidae||Fundulus confluentus||Goode and Bean||1879||Marsh Killifish|
Unique Characters: Pale spot on body at dorsal fin origin. Five gill rakers. Males with numerous dark vertical bars on side of the body; female with ocellated black spot in dorsal fin. Jaw teeth in more than a single row. 9 or more scale rows between origin of dorsal fin and origin of anal fin. Dorsal fin origin over or anterior to anal fin origin. Dorsal-fin soft rays 10-15. Mouth level with, or slightly above, a horizontal line drawn through the middle of the eye. Origin of dorsal fin more or less over origin of anal fin. Female with normal genital pouch. Occurs primarily in brackish or salt water.
Banded Killifish Fundulus diaphanus. Usually 40-49 lateral scales. Deeper bodied. Dorsal fin with no black spot
Mummichog Fundulus heteroclitus. Dark spot on body at base of dorsal fin. Dorsal fin of male often has dark posterior spot or blotch. Nine or 10 gill rakers. Female with long genital pouch.