Story perspectives
Invasive Flathead Catfish Threaten Pennsylvania's Native Fish
9/9/2025
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Story summary
- Flathead catfish, invasive in Pennsylvania's Susquehanna River, threaten local ecosystems and native fish.
- These predators can reach 60 inches and over 100 pounds, impacting fish populations significantly.
- A study of 279 fish and 64 crayfish revealed flathead catfish as apex predators.
- Findings show native species alter diets and behaviors to avoid competition.
- Prevention includes reporting sightings and not releasing caught flathead catfish.
