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MBSS Fish Information
MUMMICHOG
Fundulus heteroclitus

The Mummichog is a member of the Killifish family (Fundulidae). Although freshwater populations exist, this is more commonly found in estuaries and is known to tolerate salinities up to 32 parts per thousand.

The map below shows presence (green circles) of this species in the 1995-2019 MBSS dataset.
Illustration by Dave Neely

Distribution of Mummichog in Maryland (MBSS data):

The MBSS has collected the following fishes in the family Fundulidae:

Common Name Genus & species
Banded killifish Fundulus diaphanus
Mummichog Fundulus heteroclitus
Rainwater killifish Lucania parva