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By ALEKSANDRA ROBINSON Capital News Service Friday, October 23, 2009

HAVRE DE GRACE - Biologists from the Maryland Department of Natural Resources stood knee deep in cold water Friday afternoon, pawing through the contents of a seine net, searching for a species of fish that many believe could be extinct.

They tossed brightly colored leaves unceremoniously back into the stream at Susquehanna State Park in Havre de Grace, but each tiny fish was inspected. There were plenty of them -- many of them belonging to the darter family.


From brown and mahogany tides to slick surface masses of blue-green scum, stretches of unnaturally abundant algae drift through the Chesapeake Bay. Some of the more benign blooms merely produce foul odors. Others form sweeping masses that block sunlight from reaching the submerged seagrass that provides a habitat for young fish and crabs.