Britannica
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What animals do backswimmers prey on?
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heteropteran
Squash bug (Anasa tristis)
Backswimmers (family Notonectidae) are predatory insects that feed on a variety of small aquatic organisms. They hunt by using their strong beaks to pierce their prey and suck out their body fluids.1
Their diet primarily consists of:
* Insects1
* Small tadpoles1
* Fishes1
Certain species, particularly those in the genus Notonecta, can be quite destructive to populations of tadpoles and fish.1