A fishmonger holds a frozen fish at the Goxu Mbacc Dock, during the outbreak of the coronavirus disease (COVID-19), in Saint-Louis, Senegal May 16, 2020. Picture taken May 16, 2020. REUTERS/Christophe Van Der Perre

A fishmonger poses as he is surrounded by closed stalls in Northwich indoor market as the spread of the coronavirus disease (COVID-19) continues, Britain, March 24, 2020. REUTERS/Molly Darlington

Lilian Atieno, a fishmonger, prepares fish at Dunga beach on the shores of Lake Victoria in Kisumu, Kenya March 18, 2020. Picture taken March 18, 2020. REUTERS/James Keyi

Fishmongers prepare fish at Dunga beach on the shores of Lake Victoria in Kisumu, Kenya March 18, 2020. Picture taken March 18, 2020. REUTERS/James Keyi

Fishmongers prepare fish at Dunga beach on the shores of Lake Victoria in Kisumu, Kenya March 18, 2020. Picture taken March 18, 2020. REUTERS/James Keyi

Lilian Atieno, a fishmonger, prepares fish at Dunga beach on the shores of Lake Victoria in Kisumu, Kenya March 18, 2020. Picture taken March 18, 2020. REUTERS/James Keyi

A woman shops at a fishmonger at the Bastille Market in Paris as a lockdown is imposed to slow the rate of the coronavirus disease (COVID-19) in France, March 19, 2020. The placard reads "Please keep the safety distance of one meter". REUTERS/Gonzalo Fuentes

A fishmonger wears a protective face mask in a main fish market in Athens, Greece, March 14, 2020. REUTERS/Alkis Konstantinidis

Aymeric Chrzan, head of the fishmongers union branch, poses in front of a trawler in the port of Boulogne-sur-Mer, France, January 29, 2020. Picture taken January 29, 2020. EU fishermen will lose the automatic right to fish in British waters once Britain leaves the European Union. REUTERS/Pascal Rossignol

TV crew seen working outside Fishmonger's Hall, at the scene of a stabbing on London Bridge, in London, Britain, December 2, 2019.

Forensic officers are seen working nearby Fishmonger's Hall, at the scene of a stabbing on London Bridge, in London, Britain, December 1, 2019. REUTERS/Toby Melville

Forensic officers are seen working nearby Fishmonger's Hall, at the scene of a stabbing on London Bridge, in London, Britain, December 1, 2019. REUTERS/Toby Melville

Forensic officers are seen working nearby Fishmonger's Hall, at the scene of a stabbing on London Bridge, in London, Britain, December 1, 2019. REUTERS/Toby Melville

Britain's Prime Minister Boris Johnson speaks with Britain's Northern Powerhouse Minister Jake Berry as they stop at a fishmongers during a visit to Doncaster Market, in Doncaster, Britain, September 13, 2019. Jon Super/Pool via REUTERS

Fishmongers work in a market downtown in Tunis, Tunisia, February 20, 2019. REUTERS/Zoubeir Souissi

A customer talks to an in store fishmonger at a Tesco supermarket near Liverpool, Britain, January 28, 2019. REUTERS/ Phil Noble

Fish used as bait lay at the seafront in Havana, Cuba November 9, 2018. Picture taken on November 9, 2018. REUTERS/Alexandre Meneghini

A fishmonger cleans fish at a fish market in La Libertad, El Salvador November 8, 2018. REUTERS/Jose Cabezas

Fish on display in a fish market at the Fisherman's Wharf in La Libertad, El Salvador November 8, 2018. REUTERS/Jose Cabezas

A fishmonger cleans a fish at the fish market at Fisherman's Wharf in La Libertad, El Salvador, November 8, 2018. REUTERS/Jose Cabezas

A fishmonger handles sea bass at the fish market in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

A fishmonger slices a fish at the fish market in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

A fishmonger cleans a sea bass at the fish market in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

A fishmonger handles a spiny dogfish on a cutting board at the fish market in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

A woman sells fishes at a seafood market in Ha Long Bay, Vietnam November 3, 2018. REUTERS/Kham

Fan shells are display for sale at a market in Lima, Peru November 2, 2018. REUTERS/Mariana Bazo

Fishes are pictured after being caught in Sidon, Lebanon November 2, 2018. REUTERS/Ali Hashisho

A fisherman cleans fish in Sidon, Lebanon November 2, 2018. REUTERS/Ali Hashisho

Sheri fish are displayed at a mini fish market in Dubai, United Arab Emirates November 2, 2018. REUTERS/Ahmed Jadallah

Sultan Ibrahim fish are displayed at a mini fish market in Dubai, United Arab Emirates November 2, 2018. REUTERS/Ahmed Jadallah

Sardines are displayed at a mini fish market in Dubai, United Arab Emirates November 2, 2018. REUTERS/Ahmed Jadallah

A fisherman collects sardines at a beach in Nam Dinh province, Vietnam November 2, 2018. REUTERS/Kham

A fishmonger arranges fish for sale at his stall at South Melbourne Market in Melbourne, Australia, November 2, 2018. REUTERS/ Phil Noble

A fishmonger holds up an octopus for sale at his stall at South Melbourne market in Melbourne, Australia, November 2, 2018. REUTERS/ Phil Noble

A Pike or brochet (Esox lucius) is pictured after its catch on Lac de Neuchatel in Portalban, Switzerland, November 1, 2018. REUTERS/Denis Balibouse

Scales are pictured on a pike or brochet (Esox lucius) after its catch on Lac de Neuchatel in Portalban, Switzerland, November 1, 2018. REUTERS/Denis Balibouse

Heads of Bondelle (Coregonus candidus) fishes are pictured after their catch on Lac de Neuchatel in Portalban, Switzerland, November 1, 2018. REUTERS/Denis Balibouse

Bondelle (Coregonus candidus) fishes are pictured after their catch on Lac de Neuchatel near Portalban, Switzerland, November 1, 2018. REUTERS/Denis Balibouse

Perche (Perca fluviatilis) fishes are pictured after their catch on Lac de Neuchatel near Portalban, Switzerland, November 1, 2018. REUTERS/Denis Balibouse

Fillets of Bondelle (Coregonus candidus) fishes are pictured after their catch on Lac de Neuchatel in Portalban, Switzerland, November 1, 2018. REUTERS/Denis Balibouse

Perche (Perca fluviatilis) fishes are pictured after their catch on Lac de Neuchatel near Portalban, Switzerland, November 1, 2018. REUTERS/Denis Balibouse

A perche or perch (Perca fluviatilis) fish is pictured inside a net after its catch on Lac de Neuchatel in Portalban, Switzerland, November 1, 2018. REUTERS/Denis Balibouse

Fresh fish is displayed for sale in Sidon, Lebanon November 1, 2018. REUTERS/Ali Hashisho

Fresh fish is displayed for sale on ice in a fishmongers shop in London, Britain, October 30, 2018. REUTERS/Russell Boyce

Fresh fish prices are displayed in a fishmongers shop in London, Britain, October 30, 2018. REUTERS/Russell Boyce

Fresh fish is displayed for sale on ice in a fishmongers shop in London, Britain, October 30, 2018. REUTERS/Russell Boyce

Fish for sale are seen at an artisanal fisherman's market in Valparaiso, Chile October 29, 2018. REUTERS/Rodrigo Garrido

Fish for sale are seen at an artisanal fisherman's market in Valparaiso, Chile October 29, 2018. REUTERS/Rodrigo Garrido

Fish for sale are seen at an artisanal fisherman's market in Valparaiso, Chile October 29, 2018. REUTERS/Rodrigo Garrido

Fish are seen on stall for sale at a market in Peshawar, Pakistan October 29, 2018. REUTERS/Fayaz Aziz

Anchovies are pictured in icy waters at a fish market in Mumbai, India, October 29, 2018. REUTERS/Francis Mascarenhas

Fish are seen on a street market in Kiev, Ukraine October 26, 2018. Picture taken October 26, 2018. REUTERS/Gleb Garanich

Red mullets are seen on a market in Nice, France October 28, 2018. REUTERS/Eric Gaillard

Red mullets are seen on a market in Nice, France October 28, 2018. REUTERS/Eric Gaillard

Fishes are seen on a market in Nice, France October 28, 2018. REUTERS/Eric Gaillard

Fishes are seen on a market in Nice, France October 28, 2018. REUTERS/Eric Gaillard

Fishes are seen on a market in Nice, France October 28, 2018. REUTERS/Eric Gaillard

Fishes are seen on a market in Nice, France October 28, 2018. REUTERS/Eric Gaillard

Fishes are seen on a market in Nice, France October 28, 2018. REUTERS/Eric Gaillard

A fish is seen on a market in Nice, France October 28, 2018. REUTERS/Eric Gaillard