Since 1997, three populations of Asian swamp eel (Synbranchidae, genus: Monopterusi) have been discovered in Florida. In 1997, populations were found near Tampa Bay and in canals in North Miami. In 1999, a third and genetically distinct population was found near Homestead close to Everglades National Park. Our field data demonstrated that the species is common and reproducing at all three locations. We have gathered data on the size-structure, reproductive phenology and fecundity, and predator-prey interactions of this fish. Based on the literature and our findings, the eel has the potential to colonize and negatively affect natural wetlands of the Everglades and other systems of the Southeast. It shares ecological and life-history attributes common to other highly successful invaders found in Florida: parental care of eggs and young, generalized diet, ability to breathe air and survive drought, and broad environmental tolerances. Assessing the effects of this invader is complicated by the disturbed nature of aquatic environments in developed areas of peninsular Florida, many of which are already occupied by other introduced fishes. In its native range, the swamp eel is not restricted to tropical areas. Given sufficient time, the eel potentially may spread throughout Florida and other U.S. regions. (Session P-32, Monday, July 9, Penn Stater, Deans Hall)

(This abstract was presented at the July 2001 Annual meeting of the American Society of Ichthyologists and Herpetologists.)

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