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fishhook water flea
Cercopagis pengoi

History:
• Fishhook water flea was first found in North America in 1998 in Lake Ontario

Characteristics:
Fishhook water flea: • Aggressive, predatory zooplankton that preys on smaller zooplankton
• Long tail spine with up to three pairs of barbs near its end
• Head is essentially composed of a single, large eye

Habitat:
Fishhook water flea:  • Estuarine habitats, lakes, marine habitats, wetlands
• Tolerates wide range of salinity and temperature

Known Distribution:
Fishhook water flea:  • New York and Great Lakes region
• Native to Europe and Asia

Impacts:
Fishhook water flea:  • A voracious predator that eats smaller zooplankton; competes with native fish and invertebrates that eat zooplankton
• Interferes with fisheries by clogging nets and fishing gear

Common Vector(s):