Toto Tiongco, a fishmonger, dries his daily catch of saltwater catfish locally known Kanduli before selling the fish at a wet market in Manila February 2, 2012. Tiongco said saltwater catfish are sold at around 100 pesos ($2.32) per kilo. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: BUSINESS SOCIETY) 

Toto Tiongco, a fishmonger, dries his daily catch of saltwater catfish locally known as Kanduli before selling the fish at a wet market in Manila February 2, 2012. Tiongco said saltwater catfish are sold at around 100 pesos ($2.32) per kilo. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: BUSINESS SOCIETY) 

Armoured catfish (front) lie with other species of fishes for sale at the Ver-o-Peso market in Belem January 11, 2012. The Ver-o-Peso market is one of Latin America's largest open air markets, where merchants from around Para State sell Amazon products ranging from fruit to medicinal plants. The city of Belem, located at the mouth of the river with a population of over 2.3 million in the greater metropolitan area and its 39 islands, according to the latest census, celebrates its 396th birthday on January 12. REUTERS/Paulo Santos (BRAZIL - Tags: TRAVEL FOOD ANNIVERSARY BUSINESS) 

Floating houses of catfish breeders are seen on the La Nga river in Vietnam's southern Dong Nai province December 14, 2011. REUTERS/Kham (VIETNAM - Tags: SOCIETY) 

Floating houses of catfish breeders are seen on the La Nga river in Vietnam's southern Dong Nai province December 14, 2011. REUTERS/Kham (VIETNAM - Tags: SOCIETY) 

A man shows a catfish he caught with a net under a flooded freeway in Bangkok November 15, 2011. REUTERS/Sukree Sukplang (THAILAND - Tags: DISASTER ENVIRONMENT) 

A man holds up a catfish he caught with a net under a flooded freeway in Bangkok November 9, 2011. Thailand's worst floods in half a century have killed more than 500 people, damaged millions of tonnes of rice, forced a series of industrial estates to close and threaten to inundate the capital, Bangkok. REUTERS/Sukree Sukplang (THAILAND - Tags: ENVIRONMENT DISASTER ANIMALS PORTRAIT) 

A catfish attempts to swim on a road flooded by the Atchafalaya River in Butte LaRose, Louisiana May 27, 2011. REUTERS/Lee Celano (UNITED STATES - Tags: DISASTER ENVIRONMENT) 

A man feeds a piece of bread to catfish in the Gadisar Lake at Jaisalmer in the desert Indian state of Rajasthan August 20, 2010. The man-made lake was built as a reservoir in the 14th century and is now home to catfish who are fed by tourists and devotees praying at nearby temples. REUTERS/Krishnendu Halder (INDIA - Tags: SOCIETY RELIGION) BEST QUALITY AVAILABLE 

A man feeds a piece of bread to catfish in the Gadisar Lake at Jaisalmer in the desert Indian state of Rajasthan August 20, 2010. The man-made lake was built as a reservoir in the 14th century and is now home to catfish who are fed by tourists and devotees praying at nearby temples. REUTERS/Krishnendu Halder (INDIA - Tags: SOCIETY RELIGION TRAVEL ANIMALS IMAGES OF THE DAY) FOR BEST QUALITY IMAGES SEE: GM1E68Q18KY01 

Michael Carmel holds catfish he caught in Pointe a la Hache, Louisiana July 16, 2010. Sport fishing has reopened in most of Louisiana's waters after being closed due to the Deepwater Horizon oil spill disaster. REUTERS/Lee Celano (UNITED STATES - Tags: DISASTER ENVIRONMENT ENERGY BUSINESS) 

Michael Carmel holds catfish he caught in Pointe a la Hache, Louisiana July 16, 2010. Sport fishing has reopened in most of Louisiana's waters after being closed due to the Deepwater Horizon oil spill disaster. REUTERS/Lee Celano (UNITED STATES - Tags: DISASTER ENVIRONMENT ENERGY BUSINESS) 

Michael Carmel holds catfish he caught in Pointe a la Hache, Louisiana July 16, 2010. Sport fishing has reopened in most of Louisiana's waters after being closed due to the Deepwater Horizon oil spill disaster. REUTERS/Lee Celano (UNITED STATES - Tags: DISASTER ENVIRONMENT ENERGY BUSINESS) 

Dead catfish lie in a tidal pool on Dauphin Island, Alabama June 2, 2010. REUTERS/Lee Celano (UNITED STATES - Tags: DISASTER ENVIRONMENT ENERGY ANIMALS SOCIETY) 

An Osprey (Pandion Haliaetus) carries a catfish at "Guama" in the Zapata Swamp Biosphere Reserve Park south of the Matanzas province in central Cuba March 5, 2010. The wetlands of Cuba represent about 4 percent of the island's territory and include habitats with unique and ideal vegetation for numerous animals such as manatis, crocodiles, fish and turtles, many resident and migratory birds. REUTERS/Desmond Boylan (CUBA - Tags: ANIMALS ENVIRONMENT SOCIETY) 

Co-director Ariel Schulman smiles before the premiere of the film "Catfish" during the 2010 Sundance Film Festival in Park City, Utah January 22, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

Subject of the documentary "Catfish," Yaniv Schulman, poses for a portrait before the premiere of the film during the 2010 Sundance Film Festival in Park City, Utah January 22, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

Subject of the documentary "Catfish," Yaniv Schulman, poses for a portrait before the premiere of the film during the 2010 Sundance Film Festival in Park City, Utah January 22, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

Subject of the documentary "Catfish," Yaniv Schulman, poses for a portrait before the premiere of the film during the 2010 Sundance Film Festival in Park City, Utah January 22, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

Subject of the documentary "Catfish," Yaniv Schulman, poses for a portrait before the premiere of the film during the 2010 Sundance Film Festival in Park City, Utah January 22, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

Co-directors Ariel Schulman (L) and Henry Joost (R) smile together with the subject of the film "Catfish," Yaniv Schulman, before the film's premiere during the 2010 Sundance Film Festival in Park City, Utah January 22, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

Co-directors Ariel Schulman (L) and Henry Joost (R) smile together with the subject of the film "Catfish," Yaniv Schulman, before the film's premiere during the 2010 Sundance Film Festival in Park City, Utah January 22, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

A vendor displays a catfish head, for sale at a market in Budapest December 18, 2009. Hungarians tend to spend much more on foods, especially meats, during the Christmas holidays. REUTERS/Laszlo Balogh (HUNGARY - Tags: FOOD) 

An auction tag placed on a catfish sculpture is on display at 20th Century Props in North Hollywood, California July 20, 2009. Hollywood's second-largest prop house is going out of business with its owner saying he has fallen victim to film and TV production leaving California for other U.S. states that lure producers with tax incentives and fewer restrictions. Photo taken July 20, 2009. REUTERS/Mario Anzuoni (UNITED STATES ENTERTAINMENT BUSINESS) 

Brazilian fishermen pull fish from their net at low tide on sand flats at the mouth of the Amazon River in Curuca, May 17, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 17, 2009. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

A Brazilian fisherman drags a string of fish toward his boat at the mouth of the Amazon River in Curuca, May 20, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 20, 2009. REUTERS/Paulo Santos (BRAZIL) 

Brazilian fisherman Francivaldo de Souza Costa pulls a string of fish into his boat at the mouth of the Amazon River in Curuca, May 20, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 20, 2009. REUTERS/Paulo Santos (BRAZIL) 

A view of shelters built by Brazilian fishermen near the mouth of the Amazon River in Curuca, May 20, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 20. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

Brazilian fishermen work on their boat near the mouth of the Amazon River in Curuca, May 19, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 19, 2009. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

Brazilian fishermen pull fish from their net at low tide on sand flats at the mouth of the Amazon River in Curuca, May 17, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 17. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

Herons stand on a sand bar at the mouth of the Amazon River in Curuca, May 19, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 19. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

Brazilian fishermen wait inside their covered boats for the rain to stop while fishing at the mouth of the Amazon River in Curuca, May 19, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 19. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

Brazilian fisherman Francivaldo de Souza Costa repairs a fish trap built in the shape of a corral, during low tide on sand flats at the mouth of the Amazon River in Curuca, May 19, 2009. Santos Costa and his fellow fishermen capture about 200 kgs (440 lbs) a day of species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 19, 2009. REUTERS/Paulo Santos (BRAZIL) 

Brazilian fishermen arrive at a sand bar with their catch at the mouth of the Amazon River in Curuca, May 16, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 16. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

Brazilian fishermen arrive at their shelter after fishing on sand flats at the mouth of the Amazon River in Curuca, May 20, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 20. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

A dead tucuxi dolphin lies on a boat after it was pulled from a fishing net in which it got tangled and drowned, at the mouth of the Amazon River in Curuca, May 19, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 19, 2009. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT ANIMALS SOCIETY) 

Brazilian fisherman Antonio Zeferino Santos Costa works with others to pull in their net at low tide on sand flats at the mouth of the Amazon River in Curuca, May 20, 2009. Santos Costa and his fellow fishermen capture about 200 kgs (440 lbs) a day of species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 20, 2009. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT SOCIETY) 

A dead tucuxi dolphin lies on a boat after it was pulled from a fishing net in which it got tangled and drowned, at the mouth of the Amazon River in Curuca, May 19, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 19, 2009. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT ANIMALS SOCIETY) 

A dead tucuxi dolphin lies on a boat after it was pulled from a fishing net in which it got tangled and drowned, at the mouth of the Amazon River in Curuca, May 19, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 19, 2009. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT ANIMALS SOCIETY) 

A water snake swallows a catfish at a temple pond in the southern Indian city of Kochi May 21, 2009. REUTERS/Sivaram V (INDIA ANIMALS SOCIETY) 

A dead tucuxi dolphin lies on a boat after it was pulled from a fishing net in which it got tangled and drowned, at the mouth of the Amazon River in Curuca, May 19, 2009. Fishermen capture species ranging from mullet, bass, piraiba and piramatuba catfish, sardines and yellow weakfish, among others, in the mixture of fresh and saltwater that characterizes the mouth of the world's largest river. Picture taken May 19, 2009. REUTERS/Paulo Santos (BRAZIL ENVIRONMENT ANIMALS SOCIETY) BEST QUALITY AVAILABLE 

Villagers search for "trey raw", a local catfish in a muddy river-bed in Reang Kesei, located in Cambodia's western Battambang province on February 10, 2009. REUTERS/Adrees Latif (CAMBODIA) 

U.S. Democratic presidential nominee Sen. Barack Obama (D-IL) walks with Miss Catfish 2008 Leah Barger prior to the first U.S. presidential debate in Oxford, Mississippi, September 26, 2008. REUTERS/Jason Reed (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA) 

The wife of former New York Yankees pitcher Jim "Catfish" Hunter stands on the pitcher's mound with former Yankees Whitey Ford (C) and Don Larsen before the final regular season MLB American Leugue baseball game at Yankee Stadium in New York, September 21, 2008. REUTERS/Ray Stubblebine (UNITED STATES) 

Catfish on are displayed for sale during early morning preparations in Washington August 15, 2008. Crabs, lobster and fresh fish are sold from floating barges 365 days a year at the fish market, also known as "The Wharf." REUTERS/Molly Riley (UNITED STATES) REUTERS 

Colby Deck, 18, hands a catfish that he caught by hand over to his friend Jesse Goates in Pauls Valley, Oklahoma June 30, 2007. REUTERS/Jessica Rinaldi (UNITED STATES) 

Colby Deck noodles for catfish as Jesse Goates (R) watches in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand as opposed to using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

A noodler competing in the Okie Noodling Tournament carries his catfish in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand as opposed to using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

Colby Deck noodles for catfish in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand instead of using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

Colby Deck noodles for catfish in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand instead of using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

Catfish are unloaded at the Okie Noodling Tournament in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand as opposed to using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

A noodler demonstrates how to noodle for catfish inside a demonstration tank at the Okie Noodling Tournament in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand as opposed to using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

A noodler demonstrates how to noodle for catfish in a holding tank at the Okie Noodling Tournament in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand as opposed to using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

A child reacts as he stands next to noodlers holding catfish at the Okie Noodling Tournament in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand as opposed to using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

Noodlers unload their catfish at the Okie Noodling Tournament in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand as opposed to using a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

Colby Deck dives underwater to noodle for catfish in Pauls Valley, Oklahoma June 30, 2007. Noodling is the sport of fishing by hand instead of with a rod and reel. REUTERS/Jessica Rinaldi (UNITED STATES) 

A mother and child buy catfish at a seafood market in Beijing June 29, 2007. The U.S. Food and Drug Administration (FDA) said on Thursday it would not allow imports of Chinese farm-raised seafood unless suppliers could prove the shipments contained no harmful residue. China is the largest producer of farmed fish, handling 50 percent of the total value of global aquacultured seafood exports around the world. It is also the third-largest exporter of seafood to the United States. REUTERS/Claro Cortes IV (CHINA) 

Japan's Prince Akishino (C) lifts a giant catfish called surubi as Paraguayan fish merchants show him fish caught in the Paraguay River, at the Puente Remanso market in Asuncion on the third day of his visit, November 3, 2006. REUTERS/Jorge Adorno (PARAGUAY) 

Japan's Prince Akishino (L) observes a giant river catfish known as a surubi, during a visit with Paraguayan diplomats to the Abasto food market in Asuncion, on the third day of his visit to Paraguay, November 3, 2006. REUTERS/Rene Gonzalez (PARAGUAY)