08/17/2026
Most kids learn about piranhas from movies. This one learned from YouTube, and it saved the day on a fishing trip.
Seamus Coffey felt something big tugging on his line and figured he already knew what it was. "I'm reeling it in, and I think there's a bass," he said. His dad, Michael, egged him on carefully. "Slow down, dude, you might lose it. This looks like something we haven't caught before."
They were fishing at Ridley Park Lake, about 20 miles from Philadelphia, on the morning of August 8. When Seamus finally pulled his catch out of the water, Michael took one look at it and had no idea what he was looking at. "I was like, 'Oh, this is a bluegill, I don't know what this is,'" he recalled.
Seamus knew immediately. "It's a piranha!" he said.
Asked how an 8-year-old identified a South American freshwater predator on sight, standing at the edge of a suburban Pennsylvania lake, Seamus had a simple answer: "Because I watch YouTube!"
Michael shared photos of the catch on Facebook, the fish's sharp, barbed teeth and bright orange belly unmistakable in the images. "At this point you can't put anything past Seamus," he wrote. The Pennsylvania Fish and Boat Commission got involved shortly after, with biologists confirming what Seamus had already figured out on his own: it really was a piranha, weighing in at two pounds.
The bigger question wasn't how a kid identified a piranha from YouTube. It was how a piranha ended up in a lake outside Philadelphia in the first place. Commission spokesperson Mike Parker explained that the fish was almost certainly a released pet, and pointed to a pattern his agency sees several times a year. "A few times each summer we get reports of something strange like this, an alligator, a caiman, some sort of exotic snake, reptile, or in this case, a fish," Parker said. "I think a lot of times people have a dream: I want to own an exotic fish, or a snake, or an alligator, and it's cute when it's small. But maybe they can't afford that or house it anymore, and they decide maybe this is someone else's problem."
Parker noted the piranha wouldn't have survived much longer in Pennsylvania waters anyway, poorly suited to both the climate and to fending for itself after a life spent as a pet. Michael confirmed the family disposed of the fish humanely rather than releasing it back into the lake, a decision Parker said was exactly the right call, both for public safety and for the local ecosystem.
