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Fish 'janitors' said vital to coral reefs

Source
United States Department of Energy (Washington, DC)

Publication Date
2013-02-14

ATLANTA, Feb. 13 (UPI) -- Herbivorous marine fish can be picky eaters, U.S. scientists say, which could spell trouble for endangered reef systems that depend on the fish as "cleaners."

Content
http://www.upi.com/Science_News/2013/02/13/Fish-janitors-said-vital-to-coral-reefs/UPI-50911360799261/