Estuary fish

Mummichog

Fundulus heteroclitus

Muddy tidal creeks, salt marshes, grass flats, and sheltered shorelines

Photo: (c) Bennett Susman, some rights reserved (CC BY) · CC-BY · Source and license. Displayed as a resized crop. Photograph illustrates the species.

Habitat: Muddy tidal creeks, salt marshes, grass flats, and sheltered shorelines
Habitat zone: Shallow tidal and marsh-edge water
Viewing activities: Beach / tidepool

What to look for

A small, minnow-like killifish associated with estuary margins.

When to look

The available records do not establish a reliable local viewing season. Use the map’s month filter to inspect dated observations; it does not predict an encounter.

RECORDED PRESENCE

Where has Mummichog been recorded?

These destination links use the same area and date cutoff as the map: 40 km circles, except for the four named regional rectangles. Checked 2026-09-19. Counts describe source records, not individual animals or sighting odds.

Chesapeake BayVirginia & Maryland, United StatesRegional rectangle · 448 source records since 2016About this destination →Florida KeysFlorida, United StatesRegional rectangle · 11 source records since 2016About this destination →

Sources, search boundaries and limitations