A Dutch angler has caught a piranha in a Netherlands river, and then let it go again.
According to News Interactive, the angler was unsure as to what species of fish he'd hooked, so he took a photograph of it before releasing it into the river.
The angler told ANP: "I thought because of the red belly that it was a red rock-bass."
News Interactive says that a fellow angler later identified the catch as a Red-bellied piranha, Pygocentrus nattereri.
This South American characoid is the most common species of piranha in captivity and was probably illegally released into the river by an irresponsible fishkeeper.