Related by context. Frequent words. (Click for all words.) 71 lamprey 59 zebra mussels 58 eels 57 mollusks 56 zebra mussel 55 sturgeon 55 horseshoe crabs 55 silver carp 54 mussels 54 fish 54 otters 54 crabs 54 larvae 53 crustaceans 53 paddlefish 53 carp 53 brook trout 53 smallmouth bass 52 lake trout 52 organisms 52 tadpoles 52 species 52 salamanders 52 mammals 52 hatchery fish 51 cormorants 51 zooplankton 51 crayfish 51 frogs 51 toads 51 brown trout 51 invasive species 51 aquatic species 50 Chinook salmon 50 belugas 50 muskies 50 freshwater fish 50 northern pike 50 beavers 50 steelhead 50 invertebrates 50 coho 50 larval 50 beetles 49 sea creatures 49 parasites 49 creatures 49 insects 49 critters 49 earthworms 49 bluegills 49 saltwater 49 rainbow trout 49 giant squid 49 smallmouth 49 cyanobacteria 48 sea urchins 48 biologists 48 freshwater 48 snails 48 microbes 48 amphibians 47 marine organisms 47 turtles 47 chinook salmon 47 striped bass 47 Asian carp 47 alligators 47 otter 47 estuaries 47 seaweeds 47 weevils 47 coho salmon 47 trout 46 mammal 46 peregrine falcons 46 ospreys 46 harbor seals 46 sperm whales 46 seahorses 46 bottlenose dolphins 46 milfoil 46 dragonflies 46 lionfish 46 salmon 46 parasite 46 crocodiles 46 vertebrate 46 humpbacks 46 chinook 46 sea otters 46 sockeye 46 gypsy moths 46 plovers 46 bull trout 46 voles 46 fingerlings 46 larva 46 Asian Carp 46 caterpillars 46 walleye