Posts Tagged ‘Hump-head Wrasse’

Humphead wrasse killing stirs calls for protection and spearfishing ban

February 1, 2017

Declare the endangered humphead wrasse as a protected species in Sri Lanka and ban spearfishing, researchers of aquatic resources, diving groups and conservationists demand. An environment lawyer says spearfishing can be banned under existing laws.

Outrage grew after pictures emerged showing a human-sized humphead wrasse, (Cheilinus undulates) also known as Napoleon wrasse, being hauled ashore after being killed. This fish, with its thick lips and a hump on its head, is listed as endangered by the International Union for Conservation of Nature. It is also regarded as a delicacy by the Chinese especially in Hong Kong where it fetches upwards of  Rs 45,000 a kilo. This coral reef fish must be in demand in Chinese restaurants in the island as well.

The fish can grow up to six feet and can weigh up to 190 kilograms. It can live up to 30 years, but many are killed before they reach maturity.

Humphead wrasse is a popular target of spear fishermen.

In Unawatuna, a dive centre that mainly caters to Russians is allowing spearfishing which destroys many large marine species, marine activists say.

“In the case of the Unawatuna incident, the fish was speared outside the protected area and the law doesn’t ban hunting of humphead wrasse. So, we are unable to take any action against them,” said Channa Suraweera of the Department of Wildlife Conservation. He oversees marine affairs.

While hunting of wild animals on land is illegal, fish is treated as a food source, irrespective of the threat levels various fish species face.

Dr Sisira Haputantri of the National Aquatic Resources Research and Development Agency said the agency will be recommending to the Fisheries Department that the humphead wrasse be made a protected species. But that will only be a start as monitoring whether the fish is being hunted is difficult.

Large coral fish such as the humphead wrass are threatened in other areas of the island as well.

In 2013, the Sunday Times  exposed the danger to the humphead wrasse particularly in Kalpitiya area where divers who dive for chank and sea cucumber also target the giant fish. They kill the fish even if it takes cover in underwater caves.

In times past, free divers engaged in spearfishing. They can stay underwater only for a limited time. But scuba gear allows divers to continue spear fishing for longer. “Scuba gear allows a diver to stay under water for long periods and chase a target fish. Most of the mature humphead wrasse in our reefs have already been hunted and large specimens such as the one that had been speared in Unawatuna are rare. Only a handful of individual fish that flee at the sight of a diver are survivors,’’ said researcher Arjan Rajasuriya, Coordinator, Coastal & Marine Programme IUCN Sri Lanka.

Dr Malik Fernando, who is a founder member of the Sri Lanka Sub-Aqua Club, a diving club, recalls how wild animals once heavily hunted in colonial times, have become a source of pride and joy in the island once they are protected.

“The land animals once hunted by a few brought wonder and joy to many, such as those who ventured into wild places and protected areas in search of them. Visiting wildlife parks became a major recreational activity and a source of income for the Government. What we are proposing for the marine environment is an extension of what has been done on land: the conservation of a threatened group of animals (fishes) that would otherwise likely disappear from our waters,” Dr Fernando writes in an appeal.

The Sri Lanka Sub-Aqua Club sent the appeal to the Minister of Fisheries in May 2015 outlining reasons for a ban on spearfishing.

Large Hump-head Wrasse speared in Unawatuna

Large Hump-head Wrasse speared in Unawatuna

“This proposal would certainly inconvenience a few people. But we are confident that those who would be affected do not depend exclusively on spearing fish or renting spear fishing equipment for their existence. Like the hunters in days gone by, they will learn to live with the new rules. The result will be that the seas around Sri Lanka will once more be home to really large giant groupers and family groups of the humphead wrasse,” he observes.

“Removal of large coral fish could be detrimental to the whole coral ecosystem affecting other species as well. For example, the humphead wrasse feed on crown-of-thorn starfish that destroys coral reefs,’’ said marine researcher Rajasuriya. Also large fish such as the tomato grouper help maintain the holes in low relief reefs where the scarlet shrimp and painted shrimp take shelter. These shrimps are high value items in the ornamental fish trade and without the large fish the shrimp populations would die out and adversely impact the sustainability of the business.

The Sub-Aqua Club has appealed to the Minister of Fisheries to protect 15 large coral fish.

Environment lawyer Jagath Gunawardane said spearfishing can be banned under the Fisheries and Aquatic Resources Act section 28, listing the equipment under the illegal gear.

The marine experts also highlight the importance of banning illegal fishing practices such as dynamiting and bottom trawling.

A diver swimming with a gentle giant Hump-head wrasse (c) www2.padi.com

A diver with giant Hump-head wrasse (c) www2.padi.com

Groupers too threatened due to spearfishing 

Not only the Hump-head Wrasse, but some other large coral fish such as Groupers are threatened due to spearfishing and other illegal destructive fishing methods. So Sub-Aqua Club in their appeal to the fisheries minister to take actions, lists following coral fish to be protected. 

 

Humphead Wrasse Cheilinus undulatus Endangered  

 

Tomato Grouper Cephalopholis sonnerati Least Concern
Whitespotted grouper Epinephelus caeruleopunctatus Least Concern
Blue and yellow grouper Epinephelus flavocaeruleus Least Concern
Brown-marbled grouper Epinephelus fuscoguttatus Near Threatened
Giant grouper Epinephelus lanceolatus Vulnerable
Malabar grouper Epinephelus malabaricus Near Threatened
Camouflage grouper Epinephelus polyphekadion Near Threatened
wavy-lined grouper Epinephelus undulosus Data Deficient
saddle grouper Plectropomus laevis Vulnerable
leopard coral grouper Plectropomus leopardus Near Threatened
Roving coralgrouper Plectropomus pessuliferus Near Threatened
Yellow-edged lyretail Variola louti Least Concern
Lyretail Grouper Variola albimaginata Least Concern
two-striped sweetlips Plectorhinchus albovittatus Not Evaluated
Tomato Grouper - threatened by spearfishing

Tomato Grouper – threatened by spearfishing

Blue and Yellow Grouper 

Blue and Yellow Grouper

Giant Grouper

Giant Grouper

Published on SundayTimes on 29.01.2017 http://www.sundaytimes.lk/170129/news/humphead-wrasse-killing-stirs-calls-for-protection-and-spearfishing-ban-226444.html

 

Spear-fishing threatens Giant Coral Fish

January 25, 2017

Images showing large Hump-head Wrasse (which is about 4.5ft) speared at Unawatuna raised concerns again whether spearfishing has to be banned. The Hump-head Wrasse  is categorized as ‘Endangered’ and it is important to protect this fish. Here is my article published on SundayTimes on 03.03.2013 http://www.sundaytimes.lk/130303/news/spear-fishing-threatens-giant-coral-fish-35194.html

Large Hump-head Wrasse speared last week

Large Hump-head Wrasse speared last week

Kalpitiya’s unsustainable fishing practices came under the spotlight recently after dozens of dolphins were killed after being trapped in banned fishing nets. Besides the charismatic dolphin, other “endangered” marine creatures are falling victim to illegal fishing methods, including spear fishing. Spear fishing could wipe out the world’s biggest reef fish, the Hump-head Wrasse, from Kalpitiya and other marine areas, warn marine biologists.

A Hump-head Wrasse (c) Nishan Perera

The Hump-head Wrasse is also known as Napoleon Wrasse, and is scientifically categorised as Cheilinus undulates. The male can grow up to six feet (two metres) and can weigh up to 190 kilograms. It has a prominent bulge on its forehead, hence the name “hump head.” Some females have a sex change and turn into males with maturity. The Hump-head Wrasse can live up to 30 years, but many get killed even before reaching maturity.

Kalpitiya fisherman Chanaka says divers who dive for chank and sea cucumber also target the Hump-head Wrasse. “Most of the larger Hump-head Wrasse are gone from Kalpitiya,” Chanaka said. In a bid to survive, the giant fish sometimes hide in cavities in underwater caves, but this does not stop divers from shooting their spears into the cavities and killing the fish.

In times past, spear fishing was done with free diving, without scuba kits. The time a hunter can stay under water was limited, but now modern spear-fishing makes use of elastic powered spear-guns and slings, or compressed gas-powered spearguns to strike the fish with accuracy. The scuba gear allow the diver to stay underwater for long periods, and divers use the extra time to go for the larger fish.

Kalpitiya Bar Reef Sanctuary architect Arjan Rajasuriya confirmed that the Hump-head Wrasse is becoming a rarity in Kalpitiya. All the larger fish have been hunted, and the Hump Head Wrasse appears to be highly vulnerable to over-fishing, he said.

The absence of the Hump-head Wrasse could be bad for the health of the coral reef, says Mr. Rajasuriya. The Hump-head Wrasse feeds on hard-shelled prey such as mollusks, starfish, or crustaceans. This includes the coral-eating Crown-of-Thorn starfish. With the disappearance of the large fish, the Crown-of-thorn starfish population is increasing and putting the system out of balance. There was a Crown-of-thorn starfish outbreak at the Pigeon Island coral reef last year.

In 1996, the International Union for Conservation of Nature (IUCN) listed the Hump-head Wrasse as vulnerable. In the Red List of Threatened Species it was later upgraded to “endangered”. The fish is also targeted for the live restaurant fish trade, where fish are kept live in tanks for the customer to pick the fish he wants cooked for him. Samantha Gunasekara of Customs Biodiversity says this kind of trade is not found in Sri Lanka.

Marine biologist Nishan Perera said spearfishing is practised in other parts of the island as well. Not only the Hump-head Wrasse, but also Giant Groupers, Parrot Fish and most of the giant fish are being over-fished in our waters by spear fishing, he said. The Giant Grouper can grow up to three metres, but such big specimens are rare these days, Mr. Perera said.

Group of Hump-head Wrasse (c) Nishan Perera

Group of Hump-head Wrasse (c) Nishan Perera