Klassifizierung / Names
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Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335).
More on author: Peters.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; süßwasser benthopelagisch. Tropical
South America: Brazil, near Rio de Janeiro (type locality).
Size / Gewicht / Alter
Maturity: Lm ?  range ? - ? cm
Max length : 6.1 cm SL Männchen/unbestimmt; (Ref. 38397)
Kurzbeschreibung
Morphologie | Morphometrie
Rückenflossenstacheln (insgesamt): 2; Rückenflossenweichstrahlen (insgesamt): 9; Afterflossenstacheln 2; Afterflossenweichstrahlen: 6; Wirbelzahl: 36. Flat, scale-less breast, developed pectorals, slightly oblique eyes, only seen from above, and narrow interorbital; 3 unbranched pectoral rays and 1 unbranched pelvic ray; lateral line complete, adipose fin present, cheeks not covered, mouth with few, unicuspid teeth, numbering only 4 on the upper jaw. A rather broad, brown lateral stripe from snout to end of peduncle just above lateral line. 'Spines' are unbranched rays.
A small, bottom living species. Not collected since more than 100 years, and thus it may well be endangered, if not extinct (Ref. 38397).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Géry, J., A. Zarske and H.J. Paepke, 2001. Supplementary description of two overlooked fish taxa, Leporinus macrolepidotus Peters, 1868, and Nanognathus borellii Boulenger, 1895, actually members of the genus Characidium Reinhardt, 1866 (Teleostei: Characiformes: Characidiidae. Zool. Abh. Mus. Tierkde. Dresden 51(3):23-31. (Ref. 38397)
IUCN Rote Liste Status (Ref. 130435)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: nicht kommerziell
Mehr Information
NamenSynonymeMetabolismusRäuberÖkotoxikologieFortpflanzungGeschlechtsreifeAblaichenSpawning aggregationFecundityEierEientwicklung
Alter/GrößeWachstumLänge-GewichtLänge-LängeLängenhäufigkeitenMorphometrieMorphologieLarvenLarven Pop.Dyn.RekrutierungDichteBRUVS
ReferenzenAquakulturAquakultur ProfilZuchtlinienGenetikElectrophoresesVererbbarkeitKrankheitenVerarbeitungNutrientsMass conversion
PartnerBilderStamps, Coins Misc.LauteCiguateraGeschwindigkeitSchwimmstilKiemenoberflächeOtolithsGehirngrößeSehfähigkeit
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
Trophic level (Ref.
69278): 3.5 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).