Pseudopimelodus mangurus (Valenciennes, 1835)

Vera-Alcaraz, Héctor S., Rios, Gabriela & Emhart Vuletich, Jimmy D., 2017, Confirmation of the occurrence for seven fish species in Paraguay., Ichthyological Contributions of PecesCriollos 49, pp. 1-9 : 5-6

Pseudopimelodus mangurus (Valenciennes, 1835)

Synonyms. Pimelodus mangurus Valenciennes, 1835 . Pseudopimelodus roosevelti Borodin, 1927 .

Morphology. Head wide and short, width almost equal its length, depressed, covered by thick layer of skin; eye small, orbit without free margin; mouth barbels flattened, maxillary barbel long reaching pectoral-fin insertion, mental barbels short; premaxillary teeth plate projected backward on its distal tip, teeth viliform, vomerian teeth absent; gill membranes free of isthmus. Dorsal profile of head straight until dorsal fin, gently concave to adipose fin, ventral profile gently convex. Dorsal fin anterior; adipose-fin base large; pectoral fin low and short, not reaching pelvic-fin insertion; pelvic fin anterior to midpoint of body; anal-fin base small, anal-fin insertion opposite to adipose-fin insertion; caudal fin forked. Dorsal- and pectoral-fin spine short with strong serrations on inner margin. Genital papilla long, reaching half distance anus to anal-fin insertion.

Measurements. Based in three specimens. Body depth 21.6-32.0% in SL. Head length 28.8-35.6% in SL.

Counts. Based in three specimens. Dorsal-fin rays I+6-7. Pectoral-fin rays I+7-9. Pelvic-fin rays i+5-7. Anal-fin rays i+8. Caudal-fin rays i+14-16+i.

Coloration in alcohol. Body pale brown with four black transverse bands, first on nape, second on dorsal-fin insertion, third on adipose-fin insertion, fourth on caudal-peduncle distal tip. Head with black vermiculation on the top. Body with black dots on transverse bands. Dorsal, pectoral, pelvic, and anal fin with two black transverse bands, first on its base, second not reaching distal margin. Adipose fin with a black transverse band on its base. Caudal fin with a black transverse band on distal tip not reaching its margin.

Remarks. First listed in Paraguay by Bertoni (1914), no record of specimens.

Examined material. All from Paraguay: Departamento de Itapúa: MNHNP 3978, alc. 2., 267.0- 229.5 mm SL, Río Paraná en el Club de Caza y Pesca Bella Vista, Bella Vista. MNHNP 3979, alc. 1, 310.0 mm SL, Río Paraná en el Club de Caza y Pesca Capitán Meza, Capitán Meza.