When she posted pictures of the unusual creature to Facebook, it inevitably went viral, with dozens of respondents offering theories on how a fish comes to have a double decker mouth. “When it bit, it felt like I had a nice fish on,” wrote Ms Geddes who herself lives in Plattsburgh. “I actually commented, ‘I hope it’s as big as it feels’. “When we got it in the boat I couldn’t believe what I was seeing! Two mouths! And yet this fish was healthy and thriving! Pretty amazing! We quickly took a few pictures and released the fish.”