Related by context. Frequent words. (Click for all words.) 57 cutthroat trout 57 nonnative species 57 hatchery fish 55 invasive species 55 aquatic insects 55 alewives 54 lampreys 54 zebra mussels 54 rotenone 54 Zebra mussels 53 aquatic organisms 52 bull trout 52 brook trout 52 smallmouth bass 52 striped bass 52 lake trout 52 coho salmon 51 trout 51 Chinook salmon 51 gizzard shad 51 aquatic species 51 northern pike 51 aquatic vegetation 51 spawning habitat 50 toxic algae 50 steelhead 50 chinook salmon 50 steelhead trout 50 fish 50 endangered salmon 50 brown trout 50 quagga mussels 50 species 50 gamefish 49 rainbow trout 49 carp 49 waterways 49 invasive weeds 49 sea lions 49 lamprey 49 invasives 49 Invasive species 48 otters 48 ballast water 48 mussels 48 chub 48 freshwater 48 migratory fish 48 aquatic habitat 48 aquatic ecosystems 48 purple loosestrife 48 sturgeon 48 coho 48 kokanee 48 nonnative 47 zebra mussel 47 trout streams 47 lakes 47 walleye 47 mute swans 47 tributaries 47 smallmouth 47 muskellunge 47 contaminants 47 impoundments 47 sea lamprey 47 endangered species 47 watersheds 47 aquatic invasive species 47 paddlefish 47 bullfrogs 47 crayfish 46 freshwater lakes 46 lionfish 46 zooplankton 46 wetland habitat 46 Asian carp 46 federally protected 46 gill nets 46 sea otters 46 flathead catfish 46 salmon 46 Delta smelt 45 estuaries 45 spawning grounds 45 largemouth bass 45 habitat 45 imperiled species 45 saltwater 45 snakehead 45 Bald eagles 45 streamside 45 artificial lures 45 trumpeter swans 45 feral pigs 45 yellow perch 45 sandbars 45 bald eagles 45 pollutants 45 snakeheads 45 rivers