Klassifizierung / Names
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Siluriformes (Catfishes) >
Auchenipteridae (Driftwood catfishes) > Auchenipterinae
Etymology: Ageneiosus: Greek, a = without + greek, geneias, -ados = bear, chin (Ref. 45335); intrusus: Name from Latin 'intrusus' meaning intruded, referring to the distinct character of the species wherein premaxilla is protuding beyond the dentary (Ref. 124585).
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; süßwasser pelagisch; tiefenbereich 3 - ? m (Ref. 124585). Tropical
South America: Bolivia and Brazil.
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 27.9 cm SL Männchen/unbestimmt; (Ref. 124585)
Kurzbeschreibung
Morphologie | Morphometrie
Rückenflossenweichstrahlen (insgesamt): 6; Afterflossenweichstrahlen: 37 - 46; Wirbelzahl: 49. This species can be distinguished from its congeners (except A. pardalis and A. ucayalensis) by having an upper jaw that overhangs the lower jaw by a distance greater than the horizontal eye diameter (vs. less than the horizontal eye diameter). It is further distinguished by the following set of characters: reduced and ossified gas bladder (vs. large, non-ossified gas bladder) and by having epaxial musculature that covers the tympanic region (vs.tympanic region translucent, not concealed by epaxial musculature) in A. pardalis; robust pectoral spine, rigid and sharp (vs. pectoral spine slender, becoming progressively segmented in individuals larger than about 100 mm SL) and 45 vertebrae (vs. 53-55) in A. ucayalensis; anal-fin rays 37-46, mode 42 (vs. 32–38, mode 34-35) in A. lineatus; deeply forked caudal fin (vs. caudal fin strongly emarginate to truncate in A. inermis, A. magoi, A. polystictus and A. vittatus); more gill rakers on the first branchial arch 15-20, mode=18 (vs. 13-16, mode=14) and by usually having a dark band on the distal margin of the caudal-fin rays (vs. distal margin of caudal-fin rays hyaline) in A. apiaka (Ref. 124585).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Ribeiro, F.R.V., L.H. Rapp Py-Daniel and S.J. Walsh, 2017. Taxonomic revision of the South American catfish genus Ageneiosus (Siluriformes: Auchenipteridae) with the description of four new species. J. Fish Biol. 90:1388-1478. (Ref. 124585)
IUCN Rote Liste Status (Ref. 130435)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Mehr Information
NamenSynonymeMetabolismusRäuberÖkotoxikologieFortpflanzungGeschlechtsreifeAblaichenSpawning aggregationFecundityEierEientwicklung
Alter/GrößeWachstumLänge-GewichtLänge-LängeLängenhäufigkeitenMorphometrieMorphologieLarvenLarven Pop.Dyn.RekrutierungDichteBRUVS
ReferenzenAquakulturAquakultur ProfilZuchtlinienGenetikElectrophoresesVererbbarkeitKrankheitenVerarbeitungNutrientsMass conversion
PartnerBilderStamps, Coins Misc.LauteCiguateraGeschwindigkeitSchwimmstilKiemenoberflächeOtolithsGehirngrößeSehfähigkeit
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Internet Quellen
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic level (Ref.
69278): 3.7 ±0.6 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (24 of 100).
