Marsh Killifish

Distinct pairing during breeding (Ref. 205). Oviparous (Ref. 205). Mature males during the breeding season are dark green, with pearly spots sometimes arranged vertically, these features having similarities with males of F. heteroclitus (Ref. 205). Females are brownish olive in color, with black dots above and black short narrow bars on the body (Ref. 205). Eggs are capable of surviving out of water for long periods of time (Ref. 45994).

Occurs mainly in grassy backwaters and brackish bays, not along open beaches. Also found in fresh water (Ref. 7251). Omnivorous and feeds on small fishes, insects, small crustaceans, plants, annelid worms and mollusks (Ref. 93252). Not a seasonal killifish. Is difficult to maintain in aquarium (Ref. 27139).

aquarium: commercial

Western Atlantic: Chesapeake Bay to southern Florida (including Keys) in USA and northeastern Gulf of Mexico.