What do zebra mussels eat? <!-- biology, wildlife, invasive species -->
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Question: What do zebra mussels eat?

Answer:

They are primarily algae feeders. They feed by filtering the water through a siphon, up to a liter per day. This is why they like the insides of pipes so well, there is a constant supply of water and food flowing by them.

Source of this FAQ:
http://cars.er.usgs.gov/Nonindigenous_Species/Zebra_mussel_FAQs/zebra_mussel_faqs.html

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