Related by context. Frequent words. (Click for all words.) 52 round goby 52 quagga mussels 51 aquatic weeds 50 invasive mussels 50 Eurasian milfoil 50 quagga mussel 50 filter feeders 47 bacteria fungi 47 zebra mussels 47 Quagga 47 Eurasian watermilfoil 47 Zebra mussels 47 aquatic invasive species 47 oxygenating 47 quagga 47 aquatic nuisance 46 brine shrimp 46 invasive Asian carp 46 invasive aquatic 45 protozoan 45 nutrient loading 45 Rotenone 45 Milfoil 45 harmful pathogens 45 ballast water 45 milfoil 44 Cyanobacteria 44 aquatic species 44 microorganisms 44 zebra mussel 43 infectious organisms 43 organisms 43 aquatic ecosystems 43 viral hemorrhagic septicemia 43 sea squirts 43 aquatic weed 43 pathogenic bacteria 43 lampreys 43 aquatic insects 43 gobies 43 Asian Carp 43 giardia 43 salvinia 42 fathead minnows 42 naturally occurring bacteria 42 invasive species 42 freshwater mussels 42 alga 42 biota 42 aquatic habitats 42 invasive weed 42 nonnative fish 42 aquatic organisms 42 stickleback 42 Phragmites 42 Invasive species 42 giant salvinia 41 bacterial 41 bacteria viruses 41 Didymo 41 aquatic vegetation 41 algae 41 micro organisms 41 Argentine ants 41 dehumidifying 41 Algae blooms 41 microorganism 41 jumbo squid 41 oceangoing ships 41 sea slugs 41 anadromous fish 41 Cryptosporidium 40 zooplankton 40 insect larvae 40 Asian carp 40 foodborne pathogens 40 microbes 40 Giardia 40 Chicago Sanitary 40 toxic algae blooms 40 harmful algal blooms 40 water hyacinth 40 rotenone 40 sea lamprey 40 stoneflies 40 tributary streams 40 toxic algae 39 freshwater 39 parasitic worms 39 duckweed 39 bacteria 39 pathogen 39 intersex fish 39 contaminants 39 Great Lakes basin 39 Hydrilla 39 waterways 39 Vibrio 39 invasive weeds 39 insect pests 39 organism