Knodus figueiredoi

Knodus figueiredoi Esguícero & Castro, 2014

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Klassificering / Namn Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Stevardiidae (Stevardiids) > Diapominae
Etymology: Knodus: Greek, knodon, -ontos = knife, sword (Ref. 45335)figueiredoi: Named for Dr. José Lima de Figueiredo of MZUSP, in appreciation for his contribution to the taxonomic studies of Neotropical fishes.
Eponymy: Dr José Lima de Figueiredo (d: 1943) aka ‘Ze Lima’ is a Brazilian ichthyologist who is a former researcher and Curator of Fishes at the Zoological Museum of the University of São Paulo. [...] (Ref. 128868), visit book page.

Miljö: miljö / Klimatzon / djupintervall / distributionsområde Ekologi

; sötvatten bentopelagisk. Tropical

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South America: Rio das Gasças, upper Rio Araguaia basin in Brazil.

Storlek / Vikt / Ålder

Könsmognad: Lm ?  range ? - ? cm
Max length : 3.2 cm SL hane/ej könsbestämd; (Ref. 97362)

Kort beskrivning Bestämningsnycklar | Morfologi | Morfometri

Mjukstrålar i ryggfenan (totalt) : 10; Ryggkotor: 37 - 39. Knodus figueiredoi differs from all other species of the genus by having only tricuspid teeth in the inner premaxillary row (vs. teeth with 5 or 7 cusps). It can be further distinguished from all its congeners by having i,5,i (vs. i,6,i or i,7) pelvic-fin rays. It can be diagnosed from K. breviceps and K. savannensis in having a conspicuous, round humeral blotch (vs. inconspicuous, vertically elongate). It can be further distinguished from K breviceps in having five (vs. six) longitudinal scale rows between the dorsal-fin origin and lateral line, and from K. savannensis in having branched anal-fin rays 15-17 (vs. 20-21), and a hyaline caudal fin (vs. dark longitudinal band on lower caudal-fin lobe). It can be differentiated from Bryconamericus novae, the only species of the genus in the Araguaia-Tocantins basin, in having a conspicuous, round (vs. inconspicuous, vertically elongate) humeral blotch, 15-17 branched anal-fin rays (vs.18-20); five (vs. four) longitudinal scale rows between the dorsal-fin origin and lateral line; four large tricuspid teeth in the dentary (vs. pentacuspid); and presence of scale rows covering the basal portions of the caudal-fin lobe (vs. absence) (Ref. 97362).
Body shape (shape guide): fusiform / normal.

Biologi     Ordlista (t.ex. epibenthic)

The type locality, Rio das Gasças, is a large and relatively deep river characterized by rapid waters and riffles, marginal sandbanks, and transparent water. The bottom of the river consists of stones, sand and moderate amount of the vegetal debris (Ref. 97362).

Livscykel och parningsbeteende Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver

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Esguícero, A.L.H. and R.M.C. Castro, 2014. Knodus figueiredoi, a new characid from the Rio das Garças, upper Rio Araguaia basin, Brazil, with comments on the taxonomic limits with comments on the taxonomic limits Knodus and Bryconamericus (Teleostei: Characidae). Ichthyol. Explor. Freshwat. 25(1):39-48. (Ref. 97362)

Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Hot mot människor

  Harmless





Mänskliga användningsområden

Fiskeri: saknar intresse
FAO - Publication: search | FishSource |

Ytterligare information

Trofisk ekologi
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Frimärken, mynt, diverse.
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Internet-källor

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoobank | Zoologiskt register

Uppskattningar baserade på modeller

Index för fylogenetisk mångfald (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01259 (0.00546 - 0.02901), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Sårbarhet i fisket (Ref. 59153):  Low vulnerability (10 of 100). 🛈