Actinopteri (ray-finned fishes) > Cypriniformes
(Carps) > Catostomidae
(Suckers) > Catostominae
Etymology: Hypentelium: Greek, hypo = below + Greek, pentelium = five lobes (Ref. 45335); nigricans: nigricans, meaning blackish (Ref. 10294) More on author: Lesueur.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; potamodromous (Ref. 51243); depth range - m (Ref. ), usually - m (Ref. ). Temperate; 0°C - ; 46°N - 30°N
North America: Great Lakes, Hudson Bay and Mississippi River basins from New York in USA and Ontario in Canada to Minnesota and south to Alabama, Arkansas and Louisiana in USA; from Mohawk-Hudson River to Altamaha River in USA; from Pascagoula River to Comite River in USA.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 61.0 cm TL male/unsexed; (Ref. 5723); common length : 29.8 cm TL male/unsexed; (Ref. 12193); max. published weight: 480.00 g (Ref. 40637)
Inhabits rocky riffles, runs and pools of clear creeks and small rivers. Occasionally found in large rivers and impoundments (Ref. 5723, 10294). Feeds on immature stages of benthic insects and snails (Ref. 10294). It feeds by disturbing the stream bottom with its large snout and sucking up organisms that it dislodges (Ref. 84357).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00603 (0.00290 - 0.01252), b=3.09 (2.89 - 3.29), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.43 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High vulnerability (62 of 100) .