Characidium nana

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Characidium nana Mendonça & Netto-Ferreira, 2015

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drawing shows typical species in Crenuchidae.

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

> Characiformes (Characins) > Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335);  nana: Named for Mariana Barreira Mendonça, the first author’s sister, known by her family and friends as 'Naná'. A noun in apposition.

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

; sötvatten bentopelagisk.   Tropical

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

South America: Rio Xingu drainage and Rio Tapajós drainage in Brazil.

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 2.5 cm SL hane/ej könsbestämd; (Ref. 104905)

Short description Morfologi | Morfometri

Mjukstrålar i ryggfenan (totalt): 11-12; Mjukstrålar i analfenan: 8 - 10; Ryggkotor: 32 - 33. Characidium nana is diagnosed from all other species of Characidium, except C. bahiense, C. interruptum, C. laterale, C. mirim, C. nupelia, C. rachovii, C. stigmosum, and C. xavante by having short, incomplete lateral line, the lack of the inner dentary series of teeth, and the absence of the parietal branch of the supraorbital laterosensory canal. It differs from C. bahiense, C. interruptum, C. laterale and C. rachvoii by the absence of the adipose fin (vs. presence of adipose fin); from Characidium mirim and C. stigmosum by having a conspicuous dark blotch onto the caudal peduncle (vs. absence of caudal blotch); and from C. nupelia and C. xavante by possessing a broad, conspicuous dark midlateral stripe (vs. narrow, inconspicuous midlateral stripe). It is further distinguished from C. xavante by having 12 circumpeduncular scales (vs. 10) (Ref. 104905).

Biologi     Ordlista (t.ex. epibenthic)

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator | Medarbetare

Mendonça, M.B. and A.L. Netto-Ferreira, 2015. New species of Characidium (Characiformes: Crenuchidae) from the Rio Tapajós and Rio Xingu drainages, Pará, Brazil. Zootaxa 4021(1):187-194. (Ref. 104905)

IUCN Red List Status (Ref. 123251)


CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

Ytterligare information

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Internet-källor

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.2   ±0.3 se; based on size and trophs of closest relatives
Resiliens (Ref. 120179):  .
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .