Finescale Dace

Chrosomus neogaeus

Predicted Distribution Loss by End-of-Century:
65%

WY Conservation Rank:
S2 (Imperiled)
SD Conservation Rank:
S1 ( Critically Imperiled)
NE Conservation Rank:
S2 (Imperiled)

Projections from Booher & Walters 2022

Synopsis: Finescale Dace are a glacial-relict species in our region, meaning their distribution is a direct result of Ice Age glaciation. Many glacial-relicts are highly vulnerable to climate change, and Finescale Dace are no exception. The species prefers cool, slow waters across the northern prairie and island mountain ranges. Expanding invasive species, especially Northern Pike, can decimate dace populations.

Other Resources:

Climate vulnerability paper (Evan Booher and Annika Walters)
Vulnerability to Northern Pike paper (Nick Hogberg; Wyoming Game & Fish)
Glacial relicts ecology thesis (Eli Felts; SDSU)
Nebraska Sandhills fish trends thesis (Braxton Newkirk; Univ. of Nebraska)