Fishkill in Oro baffles BFAR-A A +A
Saturday, December 21, 2013
SOME 10 to 15 kilograms of small fish of different varieties were found floating by residents Thursday just a few meters away from the shoreline in Zone 3, Barangay Tablon, Cagayan de Oro City, but the Bureau of Fisheries and Aquatic Resources (BFAR) has yet to determine what caused it.
Thorndike Pingol, doctor of Veterinary Medicine (DVM) working at the BFAR in Northern Mindanao, said Friday that their office has no conclusive data after they checked the area and examined the dead fishes.
Pingol said BFAR took water samples and found out that the seawater in the area is at normal levels.
“We also checked the dead fishes and we did not find any infection and gross abnormality that caused their deaths,” said Pingol, adding they found no hemorrhages on the dead fishes.
He said their office cannot conclude on what really happened to those fishes because there were no conclusive evidences that pointed out to a specific cause.
Pingol added the dead fishes are mostly less than five inches long that live in the seabed.
“The fishkill was observed by the residents near the coastline around 6 in the morning on Thursday,” Pingol said.
Marno Taban, Zone 3 leader, told Sun.Star Cagayan de Oro that he was not around when the incident happened but the residents reported the fishkill right away.
He immediately reported the incident to the village officials and prompted Jerry Flores, the village administrator, to rush to the site.
Taban said they found more than 10 varieties of small fishes, namely: danggit, bakasi, lambayan, nokos (squid), ibis, and moong, among others.
Pingol and Taban both agreed that the fishkill happened on a low tide but the water testing was conducted in the afternoon, which was a high tide. Taban said they didn't notice any abnormality on the look and smell of the water.
He added that the water current was going west when one is facing the water, and the bulk of the lifeless fishes are near the company that produces cooking oil.
Taban and the residents have no idea where the fishkill started, but it also happened in the nearby areas.
Although BFAR-Northern Mindanao cannot yet conclude the cause behind the fishkill, Taban said there are possible causes of the incident.
Taban said it is possible that the fishkill was caused by pollutants in the water, knowing that most of the affected were small fishes.
However, to come up with a conclusive data that pollution possibly caused it, a “physio water” chemical analysis is required but the bureau has no equipment for the said testing procedure.
Another possibility, Taban said, is the abrupt changes in the environment. It is possible that the small fishes were not able to adapt to the changes.
Taban added it is less likely that the fishes died of disease since it involved different kinds of fish.
Published in the Sun.Star Cagayan de Oro newspaper on December 21, 2013.