Ouachita Studfish
(Fundulus caddo)

General data

Scientific names: Ouachita Studfish
Habitat: Freshwater
Climate: Temperate
Distribution: Mississippi River

The newly described species Fundulus caddo, commonly known as the Ouachita Studfish, is endemic to the Ouachita Highlands of Arkansas, USA. Its distribution is confined to the Red, Ouachita, and Saline River drainages within this region.

These habitats are characterized by clear, upland streams with gravel substrates, typical of the Ouachita Highlands. The species limited distribution and specific habitat preferences highlight its ecological significance within these river systems.​