Speckled Chub

Macrhybopsis aestivalis

Key to species of Macrhybopsis aestivalis complex east of Mississippi River 1a. Anal-fin rays usually 7; two pairs of maxillary barbels; dorsal-fin origin directly above pelvic-fin origin; pharyngeal teeth always 4-4; anal opening midway between pelvic and anal-fin origins; body essentially pallid, the melanophores tiny and usually not readily visible; belly scaleless anterior to pelvic fins; pectoral-fin rays in males long and pointed, the outer rays notably longer than innermost rays (fins generally shorter in females) and often extending past pelvic-fin origin; average body size smaller, rarely reaching 50 mm SL, with great majority of specimens (all but six of 667 specimens examined) under 46 mm SL................................................................................... Macrhybopsis pallida Eastern Gulf slope drainages of western Florida and southeastern Alabama, including Escambia, Blackwater Bay, and Choctawhatchee river drainages 1b. Anal-fin rays usually 8; one pair of maxillary barbels; dorsal-fin origin either directly above or distinctly behind pelvic-fin origin; pharyngeal teeth either 4-4, 1,4-4,1, or some combination thereof; anal opening either midway b

Morphological and genetic evolution in eastern populations of the Macrhybopsis aestivalis complex (Cypriniformes: Cyprinidae), with the descriptions of four new species