flathead catfish (IMAGE)
Caption
To determine what the flathead catfish were eating, researchers collected 576 of them over two years, with 241 individuals having recoverable stomach contents. The researchers extracted DNA from those contents and identified prey tissues.
Credit
Julian Avery/Penn State
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Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted.
License
CC BY-NC-ND