Leporinus bleheri Géry, 1999

Leporinus bleheri Géry, 1999 View in CoL

urn:lsid:zoobank.org:act:

( Fig. 13 View FIGURE 13 ; Tab. 5 View TABLE 5 )

Leporinus bleheri Géry, 1999:108–12

( holotype MHNG 2599.60 , 142 mm SL; type-locality: Verde River , Iténez-Guaporé basin, Bolivia at the border with Brazil, 14°8’S 60°30’W, 11 Set 1996 GoogleMaps , H. Bleher).

— Jégu et al., 2012:119 (checklist, Verde River   GoogleMaps ). — Sarmiento et al., 2014:38, 183 (checklist, Verde River   GoogleMaps ). — Ramirez, 2015:14, 25, 27, 31, 57, 75-76, 105–106 (comparative molecular material, Guaporé River   GoogleMaps ). — Britski, Birindelli 2016:26–27, 37 (comparative material, Verde and Tiquié rivers). — Ramirez et al., 2016:3, 5 (fig. 1–d), 8 (comparative molecular material, Guaporé River   GoogleMaps ). — Ramirez et al., 2017:3 (comparative molecular material, Guaporé River   GoogleMaps ). — Burns et al., 2017:1, 11, 15, 19 (comparative material, Verde River   GoogleMaps ). — Dagosta, Pinna, 2019:69 (new reports, Guaporé, Negro and Amazonas Estuary). — Oliveira et al., 2020:3, 5 (checklist, Jamari and Madeira rivers). — Ramirez et al., 2020:7 (comparative molecular material, Guaporé River).

Leporinus sp.1 . — Lima et al., 2005:145 (checklist and brief description, Tiquié River).

Diagnosis. Leporinus bleheri is distinguished from all other anostomids except L. affinis , L. altipinnis , L. desmotes , L. enyae , L. fasciatus , L. jatuncochi , L. personi , L. tigrinus , L. villasboasorum , L. y-ophorus , and L. lignator by having dark vertical bars encircling the body in adults and nine branched pelvic-fin rays ( vs. horizontal bars, dark spots or dark transversal bars not encircling the body, and eight branched pelvic-fin rays). Leporinus bleheri is distinguished from the formers except for L. tigrinus and L. lignator by having three teeth on the premaxillary and four on the dentary ( vs. 3/3 or 4/4). Leporinus bleheri is distinguished from L. tigrinus by having nine dark transversal bars on the trunk ( vs. eight) and from L. lignator by having 16 circumpeduncular scales ( vs. 12).

Description. Morphometric and meristic values in Tab. 5 View TABLE 5 . Small-sized species for the genus, largest examined specimen 123.97 mm SL. Greatest body depth at dorsal-fin origin. Body rounded, slightly robust. Dorsal profile convex from snout tip to dorsal-fin origin, somewhat concave from end of dorsal fin to adipose-fin origin, then distinctly concave to caudal fin. Ventral profile convex from lower jaw to anal-fin origin, concave from anal fin to caudal fin. Three teeth on the premaxillary and dentary, stair-like, unicuspid, and incisiform. Lateral line complete from supracleithrum to base of caudal fin. Dorsal-fin origin a bit anterior to body middle. Adipose fin small, rounded, origin slightly behind anal-fin origin. Pectoral-fin origin at the border of opercle. Pelvic-fin origin a bit behind dorsal-fin origin. Anal-fin origin slightly ahead of adipose-fin origin. Caudal fin forked, dorsal lobe slightly longer than ventral one.

Osteology. It is the same as Leporinus lignator ( Figs. 6-7 View FIGURE 6 View FIGURE 7 ; 9-12 View FIGURE 9 View FIGURE 10 View FIGURE 11 View FIGURE 12 ) with the following exceptions. Canal on infraorbital one robust and curved. Third infraorbital less wide, more rectangular ( Fig. 6B View FIGURE 6 ). On suspensorium, smaller anterodorsal process on autopalatine. Metapterygoid-quadrate fenestra slightly bigger ( Fig. 6H View FIGURE 6 ). On branchial apparatus, tooth plate of fifth ceratobranchial with two irregular rows of approximately twelve acicular teeth ( Fig. 8E View FIGURE 8 ). Tooth plate of fourth epibranchial with two irregular rows of around six acicular teeth ( Fig. 8F View FIGURE 8 ).

Coloration in alcohol. Coloration as in L. lignator .

Coloration in life. Live specimens yellowish, darker dorsally, and lighter ventrally. Vertical bars conspicuously black. Fins colors similar to those of preserved specimens ( Fig. 13 View FIGURE 13 ).

Geographical distribution. Leporinus bleheri is distributed in different tributaries of the Amazonas rivers, including the Madeira, Negro, and Purus rivers, in Brazil and Bolivia ( Fig. 12 View FIGURE 12 ).

Conservation status. Most of the distribution area of L. bleheri is relatively well-preserved and includes several areas of protection, such as indigenous land and national or state parks. The conservation status of Leporinus bleheri is likely a Least Concern (LC) according to IUCN criteria (IUCN, 2022).

Material examined. Bolivia: MNHN 2001-0495 About MNHN , 1 paratype, ca. 14°08’S 60°29’W, 11 Sep 1996, Bleher. GoogleMaps Brazil: CPUFMT 2820, 1, 122.7 mm SL, Córrego Corgão, tributary of Galera River ( Guaporé basin), 14°27’25”S 59°30’30”W, Nova Lacerda, Mato Grosso, 4 Nov 2011, G. Figueiredo. GoogleMaps MPEG 10790 View Materials , 2 View Materials , 104.5 View Materials – 135.3 mm SL, Urucu River, tributary of Solimões River , 04°52’4.7”S 65°07’25”W, Coari, Amazonas, 16 Aug 2006, W. B. Wosiacki. GoogleMaps MPEG 10791 View Materials , 4 View Materials , 128.1 View Materials – 154.3 mm SL, Urucu River, tributary of Solimões River , 04°52’04.7”S 65°07’25”W, Coari, Amazonas, 21 Aug 2006, W. B. Wosiacki. GoogleMaps MPEG 16764 View Materials , 2 View Materials , 169.0– 180.6 mm SL, Urucu River, tributary of Solimões River , 04°52’04.7”S 65°07’25”W, Coari, Amazonas, 5 Aug 2009, B. S. Prudente. GoogleMaps MZUEL 21725 , 10 , 123.97 – 86.02 mm SL; 1 CS, 86.02 mm SL, Capivari River, Madeira River basin, 14°42’45.41”S 60°14’59.77”W, Vila Bela da Santíssima , Mato Grosso, 17 Feb 2020, W. M. Ohara. GoogleMaps MZUSP 66676 View Materials , 1 View Materials , 130.0 mm SL, Tiquié River, Negro River basin, 00°16’27”N 69°54’56”W, Santa Izabel do Rio Negro , Amazonas, Mai-Jun 2000, Tukano indians. GoogleMaps MZUSP 85374 View Materials , 1, 168.3 mm SL, Tiquié River, Negro River basin, 00°15’22”N 69°50’24”W, Santa Izabel do Rio Negro , Amazonas, 2004, Tarcísio. GoogleMaps MZUSP 93445 View Materials , 1 View Materials , 168.0 mm SL, Tiquié River, Negro River basin, ca. 00°10’N 69°07’W, Santa Izabel do Rio Negro , Amazonas, Nov 2006, F. C. T. Lima. GoogleMaps NUP 19446, 3, 131.7– 46.4 mm SL, Jamari River , 10°05’01.0”S 63°08’52.0”W, Monte Negro, Rondônia, 1 Jun 2016, J. R. Gonçalves. GoogleMaps NUP 23852, 1, 93.7 mm SL, Jamari River , 10°20’10”S 63°15’12”W, Monte Negro, Rondônia, 15 Jul 2022, J. R. Gonçalves GoogleMaps .