Pennsylvania Fish and Boat Commission warns that highly destructive invasive species was discovered in Pennsylvania pet store.
Suckermouth Catfishes: Threats to Aquatic Ecosystems of the
Zebra mussels are in central Pa., and that's not a good thing
Invasive zebra mussels found in moss ball plants at pet stores
PDF) Invasive Species, Climate Change and Ecosystem-Based Adaptation: Addressing Multiple Drivers of Global Change Global Invasive Species Programme
It's a big deal': B.C. conservation officers on alert after invasive mussels found in pet store aquarium, iNFOnews
Moss balls could pose serious issue for water systems if discarded improperly, DEQ says
Foreign fish species hi-res stock photography and images - Alamy
Downstate Public Ponds to be Treated for Invasive Aquatic Weed Hydrilla - State of Delaware News
Ecologists raise alarm over releases of mosquito-killing guppies, Science
Invasive Plant Species Proliferation on Long Island - North Shore Land Alliance
Guide to Alert Species - Environment Controls
Aquatic Nuisance Species (ANS) in Georgia Department Of Natural Resources Division
Field Guide to Aquatic Invasive Species - Ministry of Natural