Knodus dorsomaculatus

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Knodus dorsomaculatus Ferreira & Netto-Ferreira, 2010

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Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Characidae (Characins; tetras) > Stevardiinae
Etymology: Knodus: Greek, knodon, -ontos = knife, sword (Ref. 45335);  dorsomaculatus: Name from the words 'dorso' for dorsal and 'maculare' for spot, referring to the dark blotch on the dorsal fin rays..

Environment: milieu / climate zone / depth range / distribution range Écologie

; eau douce benthopélagique. Tropical

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

South America: Teles Pires River, Tapajós River basin, Brazil.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 4.8 cm SL mâle / non sexé; (Ref. 85071)

Description synthétique Morphologie | Morphométrie

Rayons mous dorsaux (Total): 9. This species is distinguished from all its congeners by the having a dark blotch on the base of the first five branched dorsal fin rays, ii,9 dorsal fin rays. It differs from K. pasco in having 2 teeth on the maxillary (vs. 5-6), 5 scale rows between the lateral line and dorsal fin origin (vs. 7) and by the 2-2.5 scale-wide dark longitudinal band from gill cover to the tips of middle caudal fin rays. It is further distinguished from all other Knodus species in its absence of a distinct dorsal fin blotch (except Knodus chapadae, Knodus meridae, Knodus mizquae, Knodus moenkhausii, Knodus savannensis, Knodus tiquiensis and Knodus victoriae, and by the distance from the snout tip to dorsal fin origin 46.8-49.2% (vs. 49.1-60.0% in all other species). The new species is distinguished from K. meridae, K. mizquae, K. savannensis, K. tiquiensis and K. victoriae by the dorsal fin base length (13·9–14·8% v., 7·7–13·5%). It differs further from K. chapadae and K. moenkhausii in having 7 cusps on the maxillary teeth (vs. 5) (Ref. 85071).

Biologie     Glossaire (ex. epibenthic)

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Ferreira, K.M. and A.L. Netto-Ferreira, 2010. Knodus dorsomaculatus (Characiformes: Characidae), a new species from Teles Pires River, Tapajós River basin, Brazil. J. Fish Biol. 77(3):468-478. (Ref. 85071)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

  Menacé (EN) (B1ab(i,iii,iv)); Date assessed: 18 May 2022

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: génôme, nucléotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 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).
Niveau trophique (Ref. 69278):  3.0   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).