| Auchenipteridae (Driftwood catfishes), subfamily: Auchenipterinae |
| 19.92 cm SL (male/unsexed) |
|
benthopelagic; freshwater |
| South America: Rio Aripuanã (Madeira drainage) and its tributaries above the
falls of Dardanelos and Andorinhas in Mato Grosso State, Brazil. |
|
Dorsal spines (total): 1-1; Dorsal soft rays (total): 6-6; Anal soft rays: 19-22; Vertebrae: 41-41. 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). |
|
Least Concern (LC); Date assessed: 07 November 2018 Ref. (130435)
|
| harmless |
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