Related by context. Frequent words. (Click for all words.) 71 lampreys 69 sea lamprey 66 lamprey 62 Zebra mussels 59 zebra mussel 59 zebra mussels 58 purple loosestrife 58 invasive species 58 invasives 57 lake sturgeon 56 milfoil 56 gypsy moths 56 lake trout 56 cormorants 56 alewives 55 phragmites 55 aquatic organisms 54 gizzard shad 54 muskellunge 54 rotenone 54 brookies 53 invasive weed 53 quagga 53 alewife 53 mute swans 53 silver carp 52 pallid sturgeon 52 beetles 52 filter feeders 52 aquatic insects 52 muskies 52 larvae 52 Invasive species 52 carp 52 aquatic vegetation 52 larval stage 51 aquatic invasive species 51 cormorant 51 gypsy moth 51 insects 51 larval 51 parasites 51 Asian carp 51 smolts 51 species 50 parasite 50 brook trout 50 Asian Carp 50 nematodes 50 trumpeter swans 50 hydrilla 50 mayflies 50 weevils 50 quagga mussels 50 northern pike 50 tadpoles 50 insect populations 50 grass carp 50 eelgrass 50 aquatic species 50 dissolved oxygen levels 50 spawning beds 49 insect 49 otters 49 mosquito populations 49 smallmouth bass 49 mussels 49 copepods 49 Leeches 49 didymo 49 nematode 49 steelhead trout 49 invasive weeds 49 hatchery fish 49 snapping turtles 49 midges 48 voles 48 ash borer 48 aphids 48 algae blooms 48 steelhead 48 zooplankton 48 brown trout 48 beetle 48 stink bugs 48 overharvesting 48 insect pests 48 schistosomiasis 48 sturgeons 48 mollusks 48 aquatic habitat 48 peregrines 48 wasps 48 spawners 48 Chinook salmon 48 beavers 48 spawning habitat 48 nonnative species 47 smallmouth 47 sturgeon 47 organisms