Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Characiformes
(Characins) > Characidae
(Characins) > Stevardiinae
Etymology: Creagrutus: Greek, kreagreytos, -os, -on = to tear, to rip up the flesh (Ref. 45335); yudja: Named after the Juruna indigenous people, self-named Yudjá (which means “keeper of the river”).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.0 cm SL male/unsexed; (Ref. 122128)
Morphology | Morphometrics
soft rays: 7 - 9;
Vertebrae: 36. This species is distinguished from its congeners by the following set of characters: absence of infraorbital 6 (vs. present); differs from its congeners, except for C. cracentis, C. maxillaris, C. melanzonus, C. phasma, C. runa, C.veruina, by having a shallower body 13.7-19.2% (vs. > 20%); differs from C. cracentis, C. maxillaris, C. phasma, C. runa, C.veruina by having a lower number of perforated lateral line scales 34-36 (vs. > 37); differs from C. melanzonus by having a higher number of post-anal scales 4-6 (vs. 2) (Ref. 122128).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Netto-Ferreira, A.L. and C.R. Moreira, 2018. New species of Creagrutus (Ostariophysi; Characiformes; Characidae) from the Rio Xingu drainage, Brazil. Zootaxa 4375(2):250-256. (Ref. 122128)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00291 - 0.01572), b=3.15 (2.95 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.7 ±0.1 se; based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .