Abstract
Abstract Fish were sampled from the entire 34.4-km Bronx River each year from 2001 to 2005 inclusive, yielding a database of 4000 fish comprising 23 freshwater species and 22 estuarine species. These data were compared to the historic data from 1936–1998 as recorded in the New York State Department of Environmental Conservation's digital database, Albany, NY. Only 6 freshwater species reported in the historic data—Rhodeus sericeus (Bitterling), Salmo trutta (Brown Trout), Semotilus corporalis (Fallfish), Esox americanus vermiculatus (Grass Pickerel), Etheostoma nigrum (Johnny Darter), and Esox lucius (Northern Pike)—are no longer in the river. However, the original report of the presence of the Johnny Darter probably resulted from taxonomic confusion since this species has never been in the Hudson Valley, and we strongly believe that the report of the presence of grass pickerel is also the result of misidentification of the specimen for the same reason as given for the johnny darter. The report of the Bro...
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