Philippines: Toxic pollutants among causes of Cavite fish kill

By Ellalyn De Vera, 29th September 2014;

Low dissolved oxygen level and toxic pollutants have caused the fish kills in Rosario, Cavite last week, according to the Bureau of Fisheries and Aquatic Resources (BFAR).

The BFAR Quick Response Team and the Fish Health Unit personnel of BFAR-Region IV-A were deployed in Rosario, Cavite last September 25 following a reported incident of fish mortality in Malimango River, a four-kilometer river, which starts in Barangay Bagbag 1 and ends in Barangay Ligtong 1 where it opens to Manila Bay.

The river traverses five barangays in Rosario, Cavite namely; Bagbag 1, Bagbag 2, Ligtong 1, Ligtong 3 and, Ligtong 4.

“The stretch of Malimango river is not an aquaculture-producing area and the fish affected by the mortality were wild stock species of Tilapia (Oreochromis sp.), asohos (sand whiting) (Sillago sp.), banak (mullet) (F. Mugilidae) and biya (goby),” BFAR reported.

The loss is estimated at one ton.

“Initial findings indicated that dissolved oxygen (DO) level in all three sampling points—Barangay Bagbag Uno (B), Barangay Ligtong 3 and Barangay Ligtong 4—was below 3-5 mg/L or within the critical level,” it said.

“The water quality test came back with high levels of ammonia-nitrogen, nitrite-nitrogen, and phosphates, beyond acceptable level, in all the sampling sites,” it added.

Ammonia is a chemical compound produced naturally from decomposing organic matter, including plants, animals and animal wastes.

The ammonia in the water samples, however, might have also come from agricultural, domestic and industrial wastes.

Phosphates, meanwhile, are one of the primary nutrient sources for many forms of algae and could come from sources like domestic sewage and runoff from agricultural land, urban areas and green areas.

These chemicals at alarming level have hazardous effects on fish which may result in fish mortality, BFAR added.

BFAR has recommended the necessary management measures during the fish mortality occurrence such as proper disposal of dead fish to ensure that dead fish will not reach the market and prevent the occurrence of sanitary-related diseases.

Source: Manila Bulletin

Philippines: Toxic pollutants among causes of Cavite fish kill

Philippines: 5 industrial firms tagged in fish kill

By Anthony Giron, 29th September 2014;

Some residents tagged at least five industrial firms as suspects in Maalimango River fish kill late last week as concerned citizens asked authorities to look into the incident thoroughly to prevent a repetition of such tributary disaster.

Mayor Jose “Nonong” Ricafrente Jr. said his administration would revive the river with a massive cleanup and fingerlings installation to replace the lost fish and other marine life in the tributary.

Ricafrente said that it may take months or a year for the more than one kilometer-stretch river to get back to life with the actions to be taken.

The lawyer-mayor declared the river dead over the weekend after he found out, through the Bureau of Fisheries and Aquatic Resources (BFAR), that the estuary water contained a chemical deadly for fish and other marine species.

Ricafrente said that the BFAR is set to issue a statement, with their final report, today with regards to the Thursday river fish kill.

The mayor claimed that BFAR’s initial finding revealed that the river fish died “due to lack of oxygen and a still unknown chemical.”

The local chief executive assured that an investigation would be called to trace the chemical source with the BFAR’s report.

Concerned residents, who requested anonymity, said they believed that the deadly chemical came from one of at least five industrial firms with “inactive or no water treatment facilities at all.”

Chemical-emitting factories, particularly those along the river, are required to install the “facilities” to prevent water pollution.

Ricafrente said that he would order the closure of the firm liable for the chemical spill. He likewise cited that he would look into the lapses of concerned agencies on the incident.

Source: Tempo

Philippines: 5 industrial firms tagged in fish kill

Philippines: After P1-M fish kill, Cavite river now dead — mayor

By Anthony Giron, 27th September 2014;

Municipal officials here tagged Maalimango River as a dead tributary as its waters were found to contain a chemical deadly for fish and other marine life.

Mayor Jose “Nonong” Ricafrente Jr. declared the vital river dead as he said that initial finding of the Bureau of Fisheries and Aquatic Resources (BFAR) revealed that the cause of the Thursday fish kill in the estuary is “lack of oxygen and a still unknown chemical.”

In an interview, Ricafrente said that the finding was based on the initial laboratory analysis report that he obtained from the BFAR at 3 p.m. Friday.

With the finding, Ricafrente ordered the immediate river restriction as well as investigation on the incident.

“It’s dead (referring to the river), the fish and other marine species will not live in the river,” Ricafrente.

Maalimango River is a more than one-kilometer tributary stretch in Barangays Bagbag I and II, Tejero I and Ligtong I, II, III, IV. Old folk said that alimangos (mud or mangrove crabs) (Scylla sp.) once thrived in the river.

The river became a talk of the town when thousands of dead fully grown and small fish such as tilapia (Oreochromis sp.), banak, asubi (both vernacular names for mullet) (F. Mugilidae) and other marine species resurfaced along the river on sunrise of Thursday (Sept. 25).

A swarm of dead fish was first sighted near the mouth of Manila Bay in Bagbag. It was the first fish kill that was reported in the town.

Bantay-Bayan and barangay men hauled off at least one ton of dead fish from the river during the day and Friday. Ricafrente reported that river fish losses may run up to more than P1 million.

Source: Manila Bulletin

Philippines: After P1-M fish kill, Cavite river now dead — mayor

Fishermen gather dead fish in Maalimango River yesterday.
Fishermen gather dead fish floating in the coastal bay of Bagbag Dos, Ligtong Rosario, in Cavite.
Photos by Edd Gumban

Philippines: Fish kill hits Cavite river
By Ed Amoroso, 27th September 2014;

At least two tons of Tilapia (Oreochromis sp.) and bangus (Milkfish) (Chanos chanos) were found floating along the banks of Maalimango River in Rosario, Cavite, an official said yesterday.

Rosario Mayor Jose Nonong Ricafrente said they were still waiting for the results of fish and water sampling tests by the Bureau of Fisheries and Aquatic Resources (BFAR).

He said they were verifying reports that chemicals from factories near the river caused the fish kill. There are at least 300 factories and establishments near Maalimango River.

Ricafrente said he would order the closure of any establishment found to be dumping chemical waste into the river.

Workers buried the dead fish hauled from the river yesterday in a vacant lot.

Source: The Philippine Star and The Philippine Star Facebook

News reports from other sources mention mullets (F. Mugilidae) instead of Milkfish as being among the main victims of this mass mortality event. Based on the photos, it appears that at least one Common Carp (Cyprinus carpio) was also a victim.

Philippines: Chemical spill suspected in Cavite fish kill

By Anthony Giron, 25th September 2014;

Dead fish have floated on Thursday morning along Maalimango River, a tributary stretching seven barangays (villages) in this town. Authorities suspect a chemical spill as the cause of the vast fish kill.

Mayor Jose “Nonong” Ricafrente Jr. ordered an investigation of the river incident that was first reported along the river near the mouth of Manila Bay at sunrise on Thursday. The local chief executive also called a fish gathering restriction and immediate cleaning of the river.

Municipal Media Affairs Officer Sid Samaniego said that fisher residents were shocked to see the dead Tilapia (Oreochromis sp.), banak (Mullet) (F. Mugilidae) and other fish species floating along the tributary in Barangays Bagbag I and II alone as early as 6 a.m. on Thursday.

He cited that it was the first time that such fish kill was reported in the area.

From Barangay Bagbag near the Mount Sea Resort, the river stretches to Tejero I, Ligtong II, III and IV.

“The river turned from bluish to brownish it was observed. The fish kill was reported by residents just as the sun was rising from the horizon. The river was virtually clear at sundown Wednesday. It was the first that the fish kill happened in the area,” said Samaniego.

In an interview, Local Bureau of Fisheries and Aquatic Resources (BFAR) Officer Rodel Marasigan said that about a ton (1,000 kilos) of dead fish had already been hauled off from the river in Bagbag area as of 10 a.m. on Thursday.

“There were more than one ton of dead fish that had been lifted from the river and there are more fish floating. The fish kill is vast and it was the first time that it happened here,” said Marasigan.

Marasigan said a chemical may be the fish kill “culprit” but he declined to confirm it, pending results from the laboratory examination that had been made.

The BFAR officer and Engineer Marconi Austria, Municipal Environment and Natural Resources Office (MENRO) had taken dead fish and river water samples for the examination.

Samaniego, citing sources, said that the probable chemical leak may come from one of the three foreign industrial establishments near the river. He withheld the names of the three firms for the meantime pending the examination result.

The sources said that the amount of fishes killed in the area may run up to millions of pesos.

Mayor Ricafrente assured a thorough investigation of the fish kill.

Ricafrente tasked local watchmen led by Isla de Bonito Barangay Chairman Nestor Llanoza and other concerned authorities to stand guard for residents who might get the contaminated fishes along the river.

He and the other administration officials were at the river site on Thursday morning.

Samaniego said that the thousands of dead fish hauled from the river would be buried in a lot in the area to prevent foul smell and that the affected tributary would be cleaned at once.

Source: Manila Bulletin

Philippines: Chemical spill suspected in Cavite fish kill

Philippines: Fish kill in Cavite wastes 1 ton; chemical spill eyed

By Anthony Giron, 25th September 2014;

Dead fish surfaced yesterday morning along Maalimango River, a tributary stretching seven barangays in this town, fueling local authorities’ suspicions of a chemical spill causing the fish kill.

Mayor Jose “Nonong” Ricafrente Jr., who immediately ordered the incident investigated, said he was still waiting as of press time yesterday afternoon for the result of the examination of the water samples taken from the river near the mouth of Manila Bay.

“The river turned from bluish to brownish… the fish kill was reported by residents just as the sun was rising from the horizon. The river was virtually clear at sundown Wednesday,” said Municipal Media Affairs Officer Sid Samaniego.

Samaniego said it was the first fish kill incident in the area with Tilapia (Oreochromis sp.) and banak (Mullet) (F. Mugilidae) among the marketable fresh water fish species found dead initially in Barangays Bagbag I and II.

But floating dead fish were also spotted from Barangay Bagbag near the Mount Sea Resort down the stretch of the river to Barangays Tejero I, Ligtong II, III and IV.

“There were more than one ton of dead fish that had been lifted from the river and there are more fish floating. The fish kill is vast and it was the first time that it happened here,” said Bureau of Fisheries and Aquatic Resources (BFAR) Officer Rodel Marasigan.

Source: Manila Bulletin

Philippines: Fish kill in Cavite wastes 1 ton; chemical spill eyed