Klassifizierung / Names
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Siluriformes (Catfishes) >
Auchenipteridae (Driftwood catfishes) > Auchenipterinae
Etymology: Trachycorystes: Greek, trachys, -eia, -ys = rough + Greek, chorystes, -ou = a soldier with helmet (Ref. 45335); menezesi: Named for Naércio A. Menezes who participated in the INPA expedition of 1976, when the new species was collected for the first time, and for his major contributions to the scientific knowledge of the ichthyofauna of the Neotropics.
Eponymy: Professor Dr Naércio Aquino Menezes (d: 1937) is a Brazilian zoologist who is Professor, Department of Zoology, Institute of Biosciences, University of São Paulo and at Museu de Zoologia da Universidade de São Paulo. [...] (Ref. 128868), visit book page.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
; süßwasser benthopelagisch. Tropical
South America: Rio Aripuanã (Madeira drainage) and its tributaries above the
falls of Dardanelos and Andorinhas in Mato Grosso State, Brazil.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ? range ? - ? cm
Max length : 19.9 cm SL Männchen/unbestimmt; (Ref. 87314)
Kurzbeschreibung
Bestimmungsschlüssel | Morphologie | Morphometrie
Rückenflossenstacheln (insgesamt) : 1; Rückenflossenweichstrahlen (insgesamt) : 6; Afterflossenweichstrahlen: 19 - 22; Wirbelzahl: 41. Diagnosed from Trachycorystes trachycorystes by having the following characters: jaws equal in length (vs. lower jaw longer, prognathous in Trachycorystes trachycorystes); skull roof covered by thick integument concealing bony sculptures (vs. skull roof covered by thin integument, bony sculptures visible); inner mental barbel thin and very short, not reaching base of outer mental barbel (vs. inner mental barbel thicker, extending to or beyond base of outer mental barbel); dorsal-fin spine serrated only along posterior margin (vs. dorsal-fin spine serrated only along anterior margin); caudal fin weakly forked (vs. emarginate); gas bladder simple, without diverticula (vs. gas bladder with
three posterior diverticula, one medial and paired posterolateral) (Ref. 87314).
Found in abundance in tributaries of the rio Aripuanã, such as igarapé do Aeroporto and igarapé Genipapo, clear water creeks two or three m wide and up to 0.6 m deep, with forested margins and sandy bottoms where fallen trunks, branches and vegetal detritus were abundant. Collected using deep nets and by displacing the submerged debris, the natural hiding-places of the species. Feeds on fish, various insects as well a scorpion and a crustacean (Ref. 87314).
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
Britski, H.A. and A. Akama, 2011. New species of Trachycorystes Bleeker, with comments on other species of the genus (Ostariophysi: Siluriformes: Auchenipteridae). Neotrop. Ichthyol. 9(2):273-279. (Ref. 87314)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
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