Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > Leuciscinae
Etymology: Macrhybopsis: Greek, makros = great + Greek, ybos, -e, -on = rounded + Greek, opsis = appearance (Ref. 45335); aestivalis: aestivalis -- of the summer (Ref. 10294).
Environment / Climate / Range
Freshwater; demersal. Subtropical; 46°N - 26°N
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.6 cm TL male/unsexed; (Ref. 5723); common length : 6.1 cm TL male/unsexed; (Ref. 12193); max. reported age: 1 years (Ref. 12193)
North America: Mississippi River basin from Ohio and West Virginia west to Minnesota and Nebraska, USA and south to Gulf Coast; Gulf Coast drainages from Choctawhatchee River in Alabama and Florida to Rio Grande in Texas and New Mexico, USA, and Mexico.
Inhabits sand and gravel runs of small to large rivers (Ref. 5723, 10294). Feeds on aquatic insect larvae dominated by midges (Ref. 10294).
The pelagic-broadcast spawning behavior consisted of males pursuing a single female and nudging her abdominal region. When the female was ready to spawn, a single male wrapped around the female at which time eggs and milt were simultaneously expelled. Reproduction usually consisted of several individual spawning episodes with at least 10-min intervals between events (Ref. 35784).
Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Pub. (20):183 p. (Ref. 3814)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00326 - 0.01113), b=3.06 (2.90 - 3.22), based on LWR estimates for species & Subfamily-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.40 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (tmax=1).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .