Intensive field collecting throughout Arkansas and a survey of literature and museum records revealed 37 fish species and subspecies in Arkansas to be threatened by human activities. Of these 37 threatened forms, seven are considered rare and endangered. One may be extinct. With regard to distribution, 19 threatened forms reside in the White River system and 11 and 10 inhabit the Arkansas and Red River systems, respectively. Nine fishes are considered threatened in the Ouachita River system, four threatened froms are known in the St. Francis drainage, and two are known in the Mississippi River proper.
Robison, Henry W.
"Threatened Fishes of Arkansas,"
Journal of the Arkansas Academy of Science: Vol. 28
, Article 22.
Available at: http://scholarworks.uark.edu/jaas/vol28/iss1/22