Machrybopsis australis

prairie chub

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Type Locality

Hubbs and Ortenburger

Etymology/Derivation of Scientific Name

Synonymy

Eisenhour (1999) recognized Macrhybopsis australis as distinct species within the M. aestivalis complex.

Characters

Maximum size:

Coloration: Body speckled for most specimens >20 mm SL (Hubbs et al. 2008).

Counts: Anal rays usually 7; pharyngeal teeth 4-4; fewer than 10 soft rays on dorsal fin (Hubbs et al. 2008).

Mouth position:

Body shape: Distance from anal fin origin to end of caudal peduncle goes 2.5 or fewer times in distance from tip of snout to anal fin origin (Hubbs et al. 2008).

External morphology: Pectoral fins in male falcate, reaching beyond base of pelvic fin (Hubbs et al. 2008). Maxillary barbels present; two pairs of barbels; posterior barbels longer than orbit length; anterior barbels usually half of orbit length; lips fleshy and thickened posteriorly; breeding males with 3 or 4 rows of tubercles on pectoral fin membranes; lateral line usually not decurved, either straight or with a broad arch; premaxillaries protractile; upper lip separated from skin of snout by a deep groove continuous across the midline; cartilaginous ridge of lower jaw hardly evident and not separated by a definite groove from the lower lip (Hubbs et al. 2008).

Distribution (Native and Introduced)

U.S. distribution: Endemic to the upper Red River basin (Eisenhour 2004; Hubbs et al. 2008).

Texas distribution: Upper Red River basin (Hubbs et al. 2008).

Abundance/Conservation status (Federal, State, NGO)

Special Concern (Hubbs et al. 2008).

Habitat Associations

Macrohabitat:

Mesohabitat:

Biology

Spawning season:

Spawning habitat:

Spawning Behavior:

Fecundity: 

Age at maturation: 

Migration:

Growth and Population structure: 

Longevity:

Food habits:

Phylogeny and morphologically similar fishes

Host Records

Commercial or Environmental Importance

References

Eisenhour, D. 1999. Systematics of Macrhypbopsis tetranema (Cypriniformes: Cyprinidae). Copeia 1999: 969-980.

Eisenhour, D. J. 2004. Systematics, variation, and speciation of the Macrhybopsis aestivalis complex west of the Mississippi River. Bulletin Alabama Museum of Natural History 23:9-48.

Hubbs, C., R.J. Edwards, and G.P. Garrett. 2008. An annotated checklist of the freshwater fishes of Texas, with keys to identification of species. Texas Journal of Science, Supplement, 2^nd edition 43(4):1-87.