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Characiformes (Characins) >
Characidae (Characins; tetras) > Stevardiinae
Etymology: Creagrutus: Greek, kreagreytos, -os, -on = to tear, to rip up the flesh (Ref. 45335).
More on authors: Vari & Lima.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water demersaal. Tropical
South America: Rio Uaupés basin in Brazil.
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 6.8 cm SL mannelijk / geslacht onbekend; (Ref. 52414)
Korte beschrijving
Morfologie | Morfometrie
Dorsale zachte stralen (totaal): 10; Anale zachte stralen: 14 - 15; Wervels: 39 - 41. It differs from Creagrutus amoenus and Creagrutus kunturus in its lack of the series of dark midlateral spots on the body that progressively coalesce ontogenetically to sometimes form a midlateral stripe in adults of the latter two species and in the distance from the snout to the anal fin origin (27.2-30.7 vs 33.8-38.8 and 30.8-34.0, respectively), distance from the snout to the pelvic fin insertion (22.2-25.6 vs 29.0-35.6 and 27.9-31.6, respectively), and the caudal peduncle depth (8.9-9.8 vs. 12.2-13.8 and 11.1-12.1, respectively). It further differs from Creagrutus amoenus in the number of vertebrae (39-41 with 39 in four specimens and 40 or 41 in 10 specimens vs 35-39 with 36-38 in 34 specimens and 39 in only one of 36 radiographed specimens, respectively, and from Creagrutus kunturus in the number of median predorsal scales (9 or 10 vs 12, respectively).
Occurs along the edge of a large pool immediately below a small fall preceded upstream by a long series of rapids and in a clear water stream with sandy bottom (Ref. 52414). Observed swimming close to the substrate in small schools of four to six fish (Ref. 52414). Feeds on benthic aquatic insect larvae (Ref. 52414).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Vari, R.P. and F.C.T. Lima, 2003. New species of Creagrutus (Teleostei: Characiformes: Characidae) from the Rio Uaupés basin, Brazil. Copeia 2003(3):583-587. (Ref. 52414)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Meer informatie
Lokale namenSynoniemenMetabolismePredatorenEcotoxicologieVoortplantingMaturiteitPaaienPaaiaggregatiesFecunditeitEierenOntwikkeling van de eieren
Leeftijd/GrootteGroeiLengte-gewichtLengte-lengteLengtefrequentiesMorfometrieMorfologieLarvenLarvale populatiedynamiekRekruteringAbundantieBRUVS
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaElectrophoresesErfelijkheidZiektesVerwerkingNutrientsMassaconversie
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.2 ±0.40 se; based on food items.
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).