Invertebrates Use our Freshwater Invertebrate Key Alderfly Larvae Common Backswimmer Lesser Water Boatman Whirligig Beetle Caddisfly Larvae Crane Fly Larvae Damselfly Nymph Dragonfly Nymph Flatworm Freshwater Shrimp Leech Rat-tailed Maggot Midge Larvae Flat-headed Mayfly Nymph Minnow Mayfly Nymph Other Mayfly Nymphs Pea Mussel Pond Skater Pond snail Ramshorn Snail Stonefly Nymph Water Flea Water Mite Water Slater Water Scorpion
