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Fish Mysteriously Dying in New Jersey's Shark River

Authorities are trying to determine what's causing fish to die in the Shark River.

By NBCNewYork.com

Authorities are trying to determine what's causing fish to die in the Shark River.

Monmouth County's health department received a report about the dead fish early Monday.Public health coordinator Michael Meddis tells the Asbury Park Press that moss bunker appears to be the affected species and the fish kill is mainly in the boat basin in Belmar.

Meddis says bunker reproduce in large numbers and typically use a lot of oxygen. Officials plan to take some oxygen readings.

Meddis can't say how many fish have died.

The state Environmental Protection Department has been notified.