Atlantic Range
The native distribution extends from the Gulf of St. Lawrence toward northeastern Florida. Introductions into parts of southwestern Europe are separate records. Preserve population origin rather than treating the species’ entire modern distribution as its original coastal range.
Tidal Life
Adults use marshes and creeks and enter nearby fresh water to a limited extent. They can leave tide pools when conditions deteriorate and show homing behavior. Air breathing does not mean an individual is independent of moisture or can survive unlimited dry exposure.
Eggs and Length
Egg deposition in ribbed-mussel shells is documented. The species is nonannual, unlike killifishes whose populations depend on a seasonal drying cycle. The maximum reference is fifteen centimeters total length, with a common value of 8.9 centimeters for comparison.
Record the Tide and Refuge
Tide stage and nearby shelter help explain a Mummichog observation. Preserve those details alongside salinity and the fish’s location.
All Lakes With Mummichog
Browse lakes and reservoirs with documented Mummichog records, listed alphabetically. Records do not establish current abundance or public access. Check the evidence and managing authority for the water you choose.
No published lakes are currently linked to this species in our confirmed records.