June sucker [SEP] IUCN conservation status
become "critically endangered" as the pure species is lost as a result of hybridization with the Utah sucker, and predatory fish feed on its larvae. Conservation measures have been put in place and fish are being raised in a fish hatchery for reintroduction.
Description.
It is a member of the sucker family Catostomidae, and occurs in sympatry with the benthic Utah sucker "Catostomus ardens". Unlike most other suckers, the June sucker is not a bottom-feeder. Its mouth is more rostrally oriented, allowing it
Blackfin sucker
The blackfin sucker ("Thoburnia atripinnis") is a species of ray-finned fish in the family Catostomidae. It is found only in the United States in the headwaters of the Barren River system in south central Kentucky.
References.
- World Conservation Monitoring Centre 1996. Moxostoma atripinne. 2006 IUCN Red List of Threatened Species.  Downloaded on 19 July 2007.