“…From this list, 24 species were deleted for a variety of reasons based on consultations with regional fisheries experts: ten marine and estuarine species only enter coastal freshwater habitats (e.g., Atlantic silverside, Menidia menidia, and winter flounder, Pseudopleuronectes americanus), two species have a restricted distribution to estuarine and coastal areas in the New England region but are more prevalent in other United States regions (e.g., ninespine stickleback, Pungitius pungitius, and hogchocker, Trinectes maculatus; Hartel et al, 2002), nine species were judged out of range (e.g. eastern blacknose dace, Rhinichthys atratulus, and Atlantic salmon, Salmo salar; Hartel et al, 2002), and three were historically introduced species that failed to become established (e.g., rainbow trout, Oncorhynchus mykiss, tiger muskellunge, Esox masquinongy x Esox lucius, and bowfin, Amia calva; Hartel et al, 2002). Anadromous fish were included in the list of potential species based on the fact that the Charles River dam, located at the mouth of the Charles River between the Charlestown and North End sections of Boston, has a fish ladder and a locking procedure allowing passage of migrating fish.…”