Klassifizierung / Names
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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); puriventris: Derived from the Latin purus (pure) and ventris (venter), in reference to the absence of dark pigmentation below lateral midline of body..
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; süßwasser demersal. Tropical
South America: Tributaries of the upper rio Santíssimo, rio Grande drainage, rio Paraíba do Sul basin, Serra do Barracão in Brazil.
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 8.0 cm SL Männchen/unbestimmt; (Ref. 91059)
Kurzbeschreibung
Morphologie | Morphometrie
Rückenflossenweichstrahlen (insgesamt): 11-13; Afterflossenweichstrahlen: 9 - 11; Wirbelzahl: 36 - 38. Similar to Trichomycterus alternatus, T. caudofasciatus, T. longibarbatus, and T. pantherinus, and can be diagnosed from other species of the Trichomycterus by the long filamentous first pectoral-fin ray about 50-70 % of the pectoral-fin length (vs. 0-40 %). Can be distinguised from T. pantherinus by the presence of the anteriormost section of the infraorbital canal (vs. absence) and 8 pectoral-fin rays (vs. 7); from T. alternatus by having 13-14 pleural ribs (vs. 10-12), and by the pelvic-fin insertion placed in a vertical through the centrum of the 17th or 18th vertebra (vs. 14-15th); from T. caudofasciatus by having pelvic-fin insertion, dorsal-fin and anal-fin origin in the vertical through 17th- 18th (vs. 14th-15th), 19th- 21st (vs. 17 th), 23nd- 24 th (vs. 21st- 22nd) respectively; from T. longibarbatus by having shorter nasal barbel, reaching middle of pectoral-fin base (vs. posterior portion of pectoral-fin base), more slender and narrower body (body depth 11.7-13.5 % SL, vs. 14.9-18.2 %, body width 6.4 -8.3 % SL, vs. 8.6- 12.9 %), shorter head (head length 16.8-19.5 % SL (vs. 20.4 - 21.8%). Differs from all congeners from southeastern Brazilian river basins, by having a unique color pattern, consisting of dark pigmentation concentrated along and above midline of flank, but absent below midline (vs. dark pigmentation extending to ventral portion of flank) (Ref. 91059).
Occurs in fast running water stream, with about 2 m width and 1 m depth, sandy bottom and pale brown and turbid water. Also found in clear water stream with rocky bottom. Encountered under marginal vegetation and no specimen was seen swimming at daylight, suggesting a nocturnal or crepuscular behavior (Ref. 91059).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Barbosa, M.A. and W.J.E.M. Costa, 2012. Trichomycterus puriventris (Teleostei: Siluriformes: Trichomycteridae), a new species of catfish from the rio Paraíba do Sul basin, southeastern Brazil. Verteb. Zool. 62(2):155-160. (Ref. 91059)
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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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=0.00851 (0.00355 - 0.02043), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
