Fundulus heteroclitus




  • Distinguishing characteristics:  Females are dark green on their back with 12-15 bars.  Males are olive colored on top with a yellow belly and spots.  In the picture above, the top fish is a female and the bottom fish is a male.


In the Wild

  • Habitat:  Found in coastal waters and rivers.  Often found in marshes.  Can tolerate large temperature and salinity ranges.
  • Diet:  Crustaceans, worms, insects, fish
  • Predators:  Many predatory fish.
  • Size:  Up to about 5 inches long.
  • Breeding:  Mummichogs mature at 1 year and breed during spring tides in the spring and summer.  Female can have 460-800 eggs.
  • Life Span:  3 years



In the Aquatics Lab

  • Diet:  brine shrimp and/or small pieces of squid
  • Size:  2-4 inches long
  • Quantity:  20+



Other information

  • Virginia Regulations:  none
  • Commercial Uses:  Mummichogs are sold and used as bait.



Murdy, E.O., and J.A. Musick.  Field Guide to Fishes of the Chespeake Bay.  2013.  The Johns Hopkins University Press. Baltimore, MD.

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