Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Characiformes
(Characins) > Characidae
(Characins) > Stevardiinae
Etymology: Creagrutus: Greek, kreagreytos, -os, -on = to tear, to rip up the flesh (Ref. 45335); varii: Named for Richard Vari of the Smithsonian Institution in recognition of his contributions to the knowledge of South American fishes, especially on Creagrutus systematics.
Environment / Climate / Range
Freshwater; benthopelagic. Tropical, preferred ?
South America: upper Rio Paranaiba basin in Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.2 cm SL male/unsexed; (Ref. 52412)
Morphology | Morphometrics
Vertebrae: 37 - 38. Distinguished from congeners in having a maxilla with a relatively slender anterior process and a posterior portion transversely compressed; a maxilla which lacks a distinct flexion in the region where it extends past the posterior limit of the premaxilla; a primordial ligament that is relatively flat transversely and attaches to the posteromedial process of the ascending process of the maxilla; the mesopterygoid and metapterygoid overlapping along their area of contact; a quadrate without a variably developed vertical ridge or process extending dorsally from the main body of the quadrate in, and posterior to, the region where the posterodorsal process of the quadrate contacts the anteroventral process of metapterygoid; and presence of the temporal foramen. Differs further in having two rows of teeth on the premaxilla, with two conical teeth in the outer row (Ref. 52412).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ribeiro, A.C., R.C. Benine and C.A. Figueiredo, 2004. A new species of Creagrutus günther (Teleostei: Ostariophysi: Characiformes) from the upper Rio Paraná basin, central Brazil. J. Fish Biol. 64:597-611. (Ref. 52412)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00578 - 0.03452), b=2.89 (2.67 - 3.11), based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.6 ±0.1 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .