Somali men carry swordfish from the sea to a market in the capital Mogadishu, Somalia Thursday, April 23, 2015. (Photo by Farah Abdi Warsameh/AP Photo)

Workers walk on plastic crates with different fish offered for sale at a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. Thailand's agriculture minister said on April 22, 2015 he had confidence in measures designed to combat illegal fishing after the European Union gave the country six months to clean up its act. Thailand, the world's third-largest seafood exporter, was issued a “yellow card” and risks an embargo on its fish exports in October unless it cracks down on illegal fishing. (Photo by Damir Sagolj/Reuters)

People use metal hooks as they move a shark inside house near a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

A man with a fish tattoo looks from a large fishing ship that just returned after 24 months out at sea, at a port in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

A woman sits in front of baskets and plastic crates with different fish offered for sale at a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

A man looks from a large fishing ship that just returned after 24 months out at sea, at a port in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

Workers sort fish at a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

People use metal hooks as they move a shark inside a house near a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

Workers sort fish at a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

Fishermen get their ship ready for another fishing trip at a port in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

Workers move fish at a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

A woman takes notes between baskets and plastic crates with fish at a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

Fishermen get their ship ready for another fishing trip at a port in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

People move and sort fish and seafood unloaded from a fishing ship at a port in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

A man takes fish from a plastic basket at a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

People stand by a pick up truck full of sharks and fish near a wholesale market for fish and other seafood in Mahachai, in Thailand's Samut Sakhon province April 23, 2015. (Photo by Damir Sagolj/Reuters)

An Indian fisherman cleans fish in the river Brahmaputra in Gauhati, Assam state, India, Sunday, April 19, 2015. (Photo by Anupam Nath/AP Photo)

An Indian fisherman lights a stove to prepare food before he goes for fishing in a boat in the river Brahmaputra in Gauhati, Assam state, India, Sunday, April 19, 2015. Brahmaputra is one of Asia's largest rivers, which passes through China's Tibet region, India and Bangladesh before converging into the Bay of Bengal. (Photo by Anupam Nath/AP Photo)

Indian fishermen sort small fish by the river Brahmaputra in Gauhati, Assam state, India, Sunday, April 19, 2015. (Photo by Anupam Nath/AP Photo)

An Indian fish seller transfers small fish to a container at a fish market along the river Brahmaputra in Gauhati, Assam state, India, Sunday, April 19, 2015. (Photo by Anupam Nath/AP Photo)

In this Wednesday, April 15, 2015 photo, a Sudanese fishermen arranges his catch in baskets on his boat, in Omdurman, Khartoum, Sudan. The river fishermen are in competition with their deep-water counterparts on the Red Sea coast. Area wholesalers and consumers tend to prefer the Red Sea fish in summer and the bonier Nile fish in winter. (Photo by Mosa'ab Elshamy/AP Photo)

In this Wednesday, April 15, 2015 photo, Sudanese fishermen steer their boats while fishing in the Nile River on the outskirts of Khartoum, Sudan. (Photo by Mosa'ab Elshamy/AP Photo)

In this Wednesday, April 15, 2015 photo, Sudanese fishermen prepare to transport their fish in a Tuk-Tuk after washing them by the Nile River bank, in Omdurman, Khartoum, Sudan. Fishermen can catch up to 100 kilograms (221 pounds) of fish on a really good day, but most days average around 50 kilograms. (Photo by Mosa'ab Elshamy/AP Photo)

In this Thursday, April 16, 2015 photo, Sudanese fishermen clean fish before selling them at the Omdurman fish market, which operates from before dawn until sunrise, in Khartoum, Sudan. (Photo by Mosa'ab Elshamy/AP Photo)

In this Wednesday, April 15, 2015 photo, Younis Hamad al-Nil, 35, sails his wooden boat on the Nile River on the outskirts of Khartoum, Sudan. For 20 years, he has made the same trip, using his expert eye to search for suitable patches of water. Once satisfied with the location, he drops his net; retrieving it a half hour later to survey his haul. (Photo by Mosa'ab Elshamy/AP Photo)

In this Thursday, April 16, 2015 photo, a Sudanese fisherman prepares to sail his boat at the start of the day at the Nile River, in Omdurman, Khartoum, Sudan. The river fishermen spend most of their days on the water; their four-long meter boats turn into temporarily homes. (Photo by Mosa'ab Elshamy/AP Photo)

In this Wednesday, April 15, 2015 photo, Sudanese fishermen sail through river algae while fishing on the Nile River on the outskirts of Khartoum, Sudan. The world's longest river, the Nile courses through 11 countries, ending in Egypt and the Mediterranean Sea. Its main tributaries, the Blue and the White Niles, meet just north of Khartoum. (Photo by Mosa'ab Elshamy/AP Photo)

In this Wednesday, April 15, 2015 photo, Sudanese fishermen prepare their boats on the banks of the Nile River in the early morning hours, in Omdurman, Khartoum, Sudan. The world's longest river, the Nile's water is shared by 11 countries, ending in Egypt and the Mediterranean Sea. Its main tributaries, the Blue and the White Niles, meet just north of Khartoum. (Photo by Mosa'ab Elshamy/AP Photo)

In this Wednesday, April 15, 2015 photo, a Sudanese fisherman gathers his net while fishing in the Nile River on the outskirts of Khartoum, Sudan. (Photo by Mosa'ab Elshamy/AP Photo)

In this Wednesday, April 15, 2015 photo, birds circle above a Sudanese fisherman as he washes his day's catch in the early morning hours by the Nile River bank, in Omdurman, Khartoum, Sudan. The river fishermen are in competition with their deep-water counterparts on the Red Sea coast. “The Nile is gentle”, fisherman Hamad al-Nil says with a smile, whereas “the sea is dangerous”. (Photo by Mosa'ab Elshamy/AP Photo)

In this Thursday, April 16, 2015 photo, Sudanese fisherman wash their day's catch in the early morning hours by the Nile River bank, in Omdurman, Khartoum, Sudan. Fishing is the one of the most common vocations in Sudan, with the Nile River traversing the country from South to North. (Photo by Mosa'ab Elshamy/AP Photo)

In this Wednesday, April 15, 2015 photo, Sudanese fishermen row their boat beneath Omdurman Bridge on the Nile River, in Khartoum, Sudan. (Photo by Mosa'ab Elshamy/AP Photo)

In this Thursday, April 16, 2015 photo, a Sudanese fisherman display their fish for sale at the Omdurman fish market, which operates before dawn until sunrise, in Omdurman, Khartoum, Sudan. Fishermen can catch up to100 kilograms (221 pounds) of fish on a really good day, but most days average around 50 kilograms. (Photo by Mosa'ab Elshamy/AP Photo)