Related by context. Frequent words. (Click for all words.) 68 zebra mussel 63 zebra mussels 56 silver carp 56 cormorants 56 quagga mussels 55 lionfish 54 invasive species 53 lake trout 52 Asian carp 52 carp 51 northern pike 51 aquatic species 50 lamprey 50 milfoil 50 invasives 49 snakehead 49 Asian Carp 49 aquatic organisms 49 Invasive species 49 alewives 49 sturgeon 48 bullfrogs 48 hydrilla 48 bluegills 48 mussels 48 smallmouth bass 48 aquatic vegetation 48 species 48 freshwater fish 48 snakeheads 48 crayfish 48 gypsy moths 48 bull sharks 47 organisms 47 Overfishing 47 nutria 47 gray squirrels 47 mollusks 47 smallmouths 47 crustaceans 47 muskies 47 zooplankton 47 aquatic invasive species 47 cormorant 47 inland lakes 46 nonnative species 46 walleye 46 larvae 46 larval 46 yellow perch 46 parasites 46 bivalves 46 snails 46 brown trout 46 toxic algae 46 gray squirrel 46 parasite 46 pickerel 46 striped bass 46 feral pigs 45 panfish 45 insects 45 emerald ash borer 45 sauger 45 steelhead trout 45 garlic mustard 45 water hyacinth 45 wasps 45 nematodes 44 smallmouth 44 gypsy moth 44 fish 44 cane toads 44 ballast water 44 eels 44 lizards 44 rainbow trout 44 muskrats 44 Burmese pythons 44 freshwater lakes 44 beetles 44 catfish 44 ash borer 44 cane toad 44 largemouth bass 43 insect 43 eutrophication 43 paddlefish 43 earthworms 43 molluscs 43 river otters 43 Alligators 43 nematode 43 baitfish 43 plankton 43 crawdads 43 aquatic ecosystems 43 bluegill 43 Largemouth bass 43 largemouth 43 invertebrates