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Do you know the effect of these invaders on fish, Dr. Farnheid?

It’s not fully known, but studies indicate that the snails can pass through a trout unharmed, while offering absolutely no nutritional value. The snails crowd out native aquatic insect communities, which provide nourishment for fish. They also eat algae—another major source of food for fish. Anglers are asked to inspect their equipment, boats, and shoes for these aquatic invaders since it’s very important to stop the spread of the snails into other waterways.

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Cast of characters - Maya Crowbes, Dr. A Beadle, Gray Fischer, Viola DeRama
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Q: How can anglers help stop New Zealand mud snails from spreading into other streams?

GLOSSARY: angler(s)—fisherman