The Fish And The Chip Restaurant, in Leicester ,went fully pescatarian last year, ditching meat products such as pulled-pork burgers from its menu. It has now closed down.
Owners left a notice on the window titled 'There's not plenty more fish in the sea' - explaining how the fishing trip had changed their view on selling fish.
"Our fishing trip was great but turned out to be a bit of an eye opener...," the sign reads.
'The impact of pollution'
"We saw the impact of pollution is having on the oceans and fish stock and we are not comfortable running a restaurant that has an impact on our environment.
"As a result, we have decided to CLOSE the restaurant.
"But don't worry. We are still committed to creating gluten-free, plant-based food and are really excited to share our new range very soon.
"Until then, thank you to all our loyal customers that have supported us with the restaurant."
Dr. Joe Wills, a law lecturer at the University of Leicester who saw the sign, said on Twitter: "Was happy to see this sign this evening. Leicester fish and chip no longer wants to be part of the depletion of the oceans so it's closed down and will reopen as a plant-based chippy!"