New York Natural Heritage Program
Blacknose Shiner
Notropis heterolepis Eigenmann and Eigenmann, 1893
Ray-finned Fishes

Threats [-]
Blacknose shiners are threatened by increased turbidity and siltation of stream bottoms from erosion and runoff, leading to a decline in the presence of aquatic vegetation. This is especially a problem for them in the southern half of New York State. Land disturbance (clearing, logging, overgrazing) and the resulting siltation which lead to the loss of vegetated backwaters, were suggested causes for the decline of the species in the Ozarks of Missouri (Pflieger 1997). Lakeshore development can contribute to decline in some areas (Eddy and Underhill 1974). Blacknose shiners are dependent on aquatic vegetation for foraging and as nursery habitat, so activities that reduce this important resource could put them in jeopardy (Roberts et al. 2006).

Research Needs [-]
Continued monitoring of known populations as well as a resurvey of locations where the species was recorded during the New York Biological Survey of 1926-1939 would help to better determine trends and locations where threats to persistence may occur.