Mummichog

Mummichogs are typically found in muddy marshes, channels, and grass flats along coastal areas. They travel in schools that may contain hundreds of individuals. Indeed, the name mummichog is derived from a Native American term which means "going in crowds".

The mummichog spawns on new and full moons in the spring and summer. Its eggs are laid near the high tide mark in empty mollusk shells or on dead vegetation and can tolerate long-term exposure to air. Typically mummichogs reach sexual maturity during their second year and live for a total of three years. ^[1]

Because of the extreme hardiness of the species, it is sometimes the only species found in severely polluted and oxygen-deprived streams, such as the Elizabeth River in Virginia, and the Hackensack River and the Arthur Kill in New Jersey during the height of the water pollution problem in the United States.

• Mummichog eggs are used in teaching embryology, because it is possible to see the eyes and the beating heart and follow the different stages of ontogenesis.

• Mummichogs are used to stock otherwise fishless ponds that breed mosquitos, and within three days the ponds are normally mosquito free.

• In 1973 the mummichog became the first fish in space when carried on Skylab 3 as part of the biological experiments package. Later space missions by the U.S., such as Bion 3, have also carried mummichog.

• Mummichogs are often caught in seines and minnow traps to be sold as live bait for fishermen.

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  Fundulus heteroclitus taken in the Chesapeake Bay, USA
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  Female from Wood's Hole, Massachusetts

• Fishbase entry (with image)