Abstract
43 species, 28 preserved in alcohol (including 19 spp. photographed) and 15 species not preserved (some still in aquarium), all photographed.
From the upper basins of the rios Tiete, Parana, Paraguay, Tapajos, Xingu and Tocantins (the last three in the Serra do Roncador).
Zusammenfassung
Prasentiert werden 43 Arten, von denen 28 als Alkohol-praparat vorliegen (darunter 19 auf Fotos), sowie 15 nicht praparierte Arten (einige leben noch in Aquarien), die alle auf Fotos gezeigt werden.
Sie stammen aus den oberen Einzugsgebieten der Fliisse Tiete, Parana, Paraguay, Tapajos, Xingt1 und Tocantins (die drei letzteren befinden sich in der Serra do Roncador).
Resume
43 especes, 28 preservees dans l'alcool (comprenant 19 especes photographides) et 15 especes non preservees (cer-taines encore en aquarium), toutes photographiees.
En provenance des bassins superieurs des rios Tiete, Parana, Paraguay, Tapajos, XingLi et Tocantins (les trois derniers dans la Serra do Roncador).
Sommario
43 specie, 28 conservate in alcol (di cui 19 fotografate) e 15 non conservate (alcune ancora in acquario), tutte fotografate.
Dal bacino superiore del rii Tiete, Parana, Paraguay, Tapa-jos, Xingti e Tocantins (gli ultimi tre nella Serra do Ronca-dor).
CHARACIDAE
Bryconinae
Brycon juvenile (photo in situ).
ca. 8 cm total length (not preserved). Rio Paraguay basin, tributary of Rio Formosa near Pitangeiras, km 30 of the road Bonito to Miranda, Fazenda in a disturbed countryside H. Bleher 15.12.2005.
Tetragonopterinae
Knodus moenkhausii (Eigenmann 8c Kennedy, 1903) (no photo).
8 ex., largest 31 mm (poor condition), Station 5. Alto Parana basin, km 78 on the road Tres Lagoas to Campo Grande; Corrego da Lagoa, seemingly dry a few days ago, H. Bleher 13.12.2005. N. 134.
Depth 3.70 and head 3.75 in SL; dorsal at midbody; trunk scales 5/38/3', 12 predorsal, 14 around caudal peduncle; base of caudal covered with small scales extending onto the proximal 1/4 or 1/3 of the middle of the lobes, not along their border; anal fin iii,18-19, no hooklets observed; S03 entire, except a small "naked" triangle dorso-posteriorally; premaxilla with 4 tricuspid teeth in the outer row and 4 pentacuspid ones in the inner row, all teeth usually black, the cuspids long; maxilla short, just reaching level of anterior margin of eye, with one broad black tooth; mandible 4 pen-tacuspid followed by about 8 much smaller tricuspid teeth. A pale vertical humeral spot just posterior to opercle, the chromatophores not dilated, a black longitudinal narrow band up to the end of the middle caudal fin rays, broadened onto the caudal peduncle. Known from Paraguay and also from Upper Amazon (same species??).
Knodus sp. 1 aff moenkhausii (Eigenmann Kennedy, 1903) (Fig. 1 in situ).
5 ex., largest 42.7 mm SL, Station 15, Pantanal do Norte, Corrego do Bororo, into Rio Vermelho, near Poxoreu, on the road north of Rondonopolis (fast moving current), H. Bleher 18.12.2005.
Largest with depth 3.7 and head 4.12 in SL, smallest with depth up to 4.25; dorsal fin anterior to midbody; no pelvic spines; trunk scales 5 or 6/37-39/4, predorsal irregular but covering predor-sal line, about 12; 14 around caudal peduncle; only the base of...