6 2 Fred C. Rohde, Mary L. Moser and Rudolf G. Amdt 



lections made at three other historic localities upstream of this site in this river 

 and state (Fig. 12). We took the first specimens known from the Little Dan River 

 in North Carolina, at a point 1.1 rkm upstream of the confluence with the Dan 

 River: one adult (released) on 21 December 1992, and one subadult (68 mm SL) 

 on 21 August 1993 (Fig. 12). We also took three adults and one subadult (44-75 

 mm SL) at one locality in the Dan River in Virginia on 10 June 1994 (Fig. 12). 

 Simonson and Neves (1986) took it at four Dan River sites in 12.4 rkm in Vir- 

 ginia. All fishes were taken in riffles with a gravel/rubble substrate; pH was 7.6- 

 8.0. 



Our capture of the two specimens in the Little Dan River was surpris- 

 ing, especially since Jenkins and Burkhead (1994) presumed that it had disap- 

 peared from this river. Since we did not take it at the four historical downstream- 

 most sites in the Dan River in North Carolina (Fig. 12), we suspect that it may 

 now be absent there. Its status of endangered in North Carolina is warranted. 



SPECIAL CONCERN 



Bigeye jumprock, Scartomyzon ariommus (Robins and Raney) 



The bigeye jumprock is endemic to the upper and middle portions of the 

 Roanoke River drainage in North Carolina and Virginia (Jenkins and Burkhead 

 1994). We found it at eight sites in a 41 rkm section of the Dan River, Stokes 

 and Rockingham counties, North Carolina, between July 1992 and May 1995 

 and in the Mayo River, a tributary of the Dan River, 1.1 rkm below the Virginia 

 state line on 22 August 1993 (Fig. 13). We collected 32 adults (106-170 mm SL, 

 mean 154.1 mm) and 3 juveniles (52-91 mm SL, mean 75.3 mm); collections 

 ranged from 1-7. Adults were taken in deep runs and heads of pools, usually near 

 large boulders and rock outcrops, and juveniles in a shallow gravel riffle (one 

 specimen) and in a sandy-bottomed pool (two); pH at capture sites was 7.4-7.8. 

 Duke Power Company personnel (unpublished data) took two individuals by 

 electroshocker at the Dan River Steam Station in Eden in Rockingham County, 

 North Carolina, in August 1990 (Fig. 13). Within its limited distribution in North 

 Carolina, this difficult-to-collect species is apparently secure. 



Riverweed darter, Etheostoma podostemone Jordan and Jenkins 



The riverweed darter is endemic to the upper Roanoke River drainage 

 in North Carolina and Virginia (Jenkins and Burkhead 1994). It is widely dis- 

 tributed in the Dan River and its tributaries (Menhinick 1991). We found it in a 

 124 rkm section of the main Dan River in North Carolina between July 1992 and 

 May 1995, as well as in the Little Dan River, Mayo River, and Virginia portion 

 of the upper Dan River (Fig. 14). We collected 434 specimens from 21-61 mm 

 SL, ranging 2-62 (mean 21.7) per collection. It was common in shallow riffles 

 with a gravel/cobble substrate; pH was 7.4-8. 1. Within its limited distribution in 

 North Carolina, the species is apparently secure. 



