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34 years, Olivier Zaga farmer attended, Saturday, May 19, 10 tonnes of fish died that he was raising in 28 enclosure installed on the edge of Lake Toho, which extends over 21 km2 in southwestern Benin. “I’m devastated,” says this former electronics, bewildered air and hoarse voice. As for him, fishing is the main activity of the inhabitants of the Department of Mono.
On May 17, the population living on the banks of the Lake had alerted on the mysterious death of several species of fish, until the phenomenon spreads to the village of Kpinnou and decimating the breeding of tilapias of Olivier Zaga, one farmer victim of This massacre. ” Out of my pen, where 40 000 fish died, I cannot evaluate the loss in the Lake”, he said.
The drama of Lake Toho made fear, among the Beninese General, intoxication of the Xwla and peoples Xweda, which organized, from 18 to 20 may, their annual Festival of reunion in Grand-Popo, 60 km from the Lake, with a lot of “dakouin”, a specialty local fresh fish. But so far, no case of death or illness associated with poisoning were reported.
Courtesy of lemonde.fr
According to the Department of agriculture and rural development, water resources of the river La Ivory at the time the fish die-off of dissolved oxygen concentration (DO) at a low level, only 2.6-3.2 mg/l while this content must reach from 4 mg/l and above. Through tests, functional forces also discovered NH4 concentration (Ammonia), gas NO2 (Nitrite) … beyond the threshold allows the 10-20 times.
Before the phenomenon of dead fish, the Dinh Quan district happens rain and lasted for about 7 hours. According to the Department of agriculture and rural development, the amount of rain water then pour La NGA River and could carry the pollutants increases the toxicity of NH4, NO2, CH4 (Mexican melt) …. do the fish die-off.
Initially, the Bureau of Fisheries Department of agriculture and rural development of Dong Nai confirmed dead fish due to the unfavorable change of the environment.
About directions support the fishermen suffered damage, head of agriculture and rural development said the case of dead fish caused by natural disasters, the Department of Dong Nai province’s recommendations support the people money to reproduce. The case of dead fish caused by discharge of effluent of the plant, the Department will suggest the police on investigations, handled according to law.
Earlier, on the night of 20/5, fish farming in the La NGA River is slow, the surface foam bite then died massively. Due to the dead fish quickly should people not up back hand, heavy economic losses. To light 21/5, fish continue to die so people are forced to sell to traders with prices from 2,000-8,000/kg.
Initial statistics of the Department of agriculture and rural development, has about 1,500 tons of carp, fish, Yao Hong … of 80 households raising died, much damage.
Courtesy of news.zing.vn
Tens of thousands of dead fish wash up on shores of a lake in Texas, America
When inhabitants of Nechí and El Bagre made a tour, on May 14, along the Nechí River, as part of an environmental assessment conducted by the Popular Training Institute, IPC, they encountered a sad scene: a large number of fish Dead people floated in the water , with an unpleasant appearance and foul odors. The events were recorded at the height of the villages of Sabalito and El Guamo.
Juan Esteban Jaramillo, researcher of the IPC Observatory, indicated that according to the complaints of the inhabitants, this is due to the damage of a jarillón (a kind of wall of land parallel to the river) of a mining entity that carries out work there, which caused Polluting elements will disperse downstream of the river.
Said entity is Mineros SA, which, through a statement stated that “due to the intense rainy season in recent days, added to the contingency of the Hidroituango project that has increased up to six times the flow of the Cauca River, presented on Monday, May 14, the breaking of a jarillon that surrounds the mining operations of the company in the jurisdiction of the municipality of Nechí. This breakage caused the waters from the Cauca River, laden with mud and sediments, to join those of the Nechí River and exceed the protection strip of the Mineros’ closed pool by more than 1.5 meters, making the combination of These materials will reach San Pedro Creek. “
Regarding the dead fish, the company indicated that “they started with fish technicians to make a diagnosis in the area and establish a plan of action to deal with this situation. In the same way, staff from the Corporate Social Responsibility area provides permanent support to the affected communities to listen and meet their needs “
Courtesy of elcolombiano.com
After Kannauj, thousands of dead fish were found floating in Ganga at Bilhaur’s Nanamau ghat, Chaubeypur’s Andimata and Pathakpur ghats in Kanpur on Tuesday.
District and Pollution Control Board officials rushed to the site and collected water samples for examination. A large number of fish had died in Kannauj’s Mehndi ghat on Monday.
Panic gripped residents of Bilhaur, Chaubeypur, Bithoor, Bhairav ghat, Shuklaganj, Gola ghat and Jajmau areas after thousands of dead fish were found floating in Ganga on Tuesday. Though the exact cause of their death is yet to be ascertained, officials of Regional Pollution Control Board said that they died due to heavy pollution which has reduced oxygen level in water to 2.8 mg.
A team of Wild Life Institute of India (Dehradun) and pollution control department visited Kannauj and collected water samples and dead fish for tests.
A team member said that it was primarily found that lack of oxygen level in water had caused death of the fish.
Courtesy of timesofindia.indiatimes.com
It’s fish kill season in Minnesota (and yes, that is different than fishing).
All around the state, hundreds of dead fish are washing up to the shorelines of small lakes, including about 10 lakes in the east metro. But officials aren’t concerned.
Winter kill is standard, especially in longer winters like this year’s.
“It’s a natural process,” said Jim Levitt, a fishery specialist for the Minnesota Department of Natural Resources. “It can actually benefit the lake in that the fish that are left have less competition. There’s more food for them, they might have a growth spurt, and there will be bigger fish for the next year or two.”
Lakes have a certain amount of oxygen in them when they freeze in the fall or early winter. The fish use that oxygen all winter and into the spring. In bigger lakes, there’s enough oxygen for most of the fish to survive, but in some of the smaller lakes, the fish slowly start to die as the oxygen depletes.
Quick lake warm-ups can also cause bacterial infections, which kill the fish as well.
“Spring can be stressful on fish,” Levitt said. “They’ve gone all winter maybe not feeding as much, it’s been cold, and now the water all of the sudden warms up and it’s spawning season so they’re spending a lot of energy on that.”
As a result, most of the fish kill calls come within a month of ice-out.
Sometimes, thousands of fish will die from winter kill, but even those high numbers are not cause for alarm, Levitt said. Although the DNR doesn’t have exact numbers of fish in each lake, several thousand fish might still be less than 10 percent, he said.
Courtesy of twincities.com
The high temperatures that in recent days have reached thermal sensations of up to 40 degrees, coupled with the decrease in the levels of the lagoons El Jahuacte, Trujillo, Barra Ciega and El Jitalito, in the area of Los Aztlanes, caused the mortality of more than 200 tons of fish during the weekend; producers urge the activation of an emerging fund for 1,500 fishermen.
Sergio Arias Isidro, president of the Board of Administration of the Federation of Fisheries Cooperatives, Aquaculture and Permits of Tabasco, said that on Saturday, May 12, the lagoons were covered by the stain of dead fish.
Courtesy of tabascohoy.com
Concerns are growing for the future of the country’s best known carp fishing lake after most of its stock was wiped out by an unknown infection over the past couple of days.
Over 400 dead carp – many up to 20 years old – have been removed by Inland Fisheries Ireland from The Lough, an urban lake in Cork city, since Saturday.
Samples have been sent to the Marine Institute in Galway for testing.
A bacterial or fungal infection is suspected, but after tests on sample fish the highly-contagious Koi Herpes Virus (KHV) has been ruled out.
Further testing is continuing, but the cause of the deaths will not be known until later this week.
Courtesy of rte.ie
Thousands of dead fish wash up on a lake in Missouri, USA