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Mayfly larva (3 points) | Cranefly larva (2 points) |
| Caddisfly larva (3 points) | Crayfish (2 points) |
| Gilled snail (3 points) | StoneFly larva (3 points) |
| Hellgramite (3 points) | Water Penny larva (3 points) |
| Fishfly Larva (2 points) | Whirligig Beetle larva (2 points)
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| Go to Practice Sample Directions | Go to Stream Study Home Page |