| Scientific Name | Cycleptus elongatus |
| Category | F |
| Taxon | Fish |
| Climate Change Vulnerability Score | Moderately Vulnerable |
The Blue Sucker (Cycleptus elongatus) is a small (up to 9 cm [3.5 in] in length) fish that can be found in the Mississippi River basin, ranging westward to the lower Rio Grande and Pecos River drainages, though it is no longer common throughout its range. In New Mexico, it is now limited to the Pecos River drainage downstream of Lake McMillan, including the lower Black River. It prefers deep river channels, pools with moderate flow, and deep lakes or reservoirs. It is a bottom-feeder that eats insects, crustaceans, plants, and algae. The Blue Sucker will experience a high degree of climate exposure and has a moderately high adaptive capacity. Overall, it has a Climate Change Vulnerability Index ranking of Moderately Vulnerable under both Representative Concentration Pathway (RCP) 4.5 and RCP 8.5 Scenarios. The Blue Sucker’s climate change vulnerability is impacted by factors related to movement, demography, and life history, which influence its ability to shift in space and persist in place.


