Ichthyofauna of the ribeirão Sucuri, a tributary of the rio Tietê, upper rio Paraná basin, southeastern Brazil
Author
Reia, Lais
Author
S. da Costa e Silva, Gabriel
Author
Garcia-Ayala, James R.
Author
P. F. Vicensotto, Ana Maria
Author
Benine, Ricardo C.
text
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2020
2020-06-16
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http://dx.doi.org/10.15560/16.3.711
journal article
10.15560/16.3.711
1809-127X
Moenkhausia bonita
Benine, Castro & Sabino, 2004
Figure 3K
Original description.
Moenkhausia bonita
Benine et al.
2004: 68
.
Material examined.
BRAZIL
• 9,
24.7−28.2 mm
SL;
São Paulo state
,
Pongaí
,
Ribeirão Sucurizinho
;
21°43′39″S
,
049°18′54″W
;
12 May 2018
; leg.
Silva G.S.C.
and
Reia L.
(LBP 26528)
•
8,
15.6−29.5 mm
SL;
São Paulo state
, Pon- gaí,
Córrego Água Grande
;
21°41′31″S
,
049°20′31″W
;
12 May 2018
; leg.
Silva G.S.C.
and
Reia L.
(LBP 26511)
.
Identification.
Body deep; mouth terminal; premaxil- lary teeth in two rows, inner row with five to six tetrato pentacuspidate teeth, outer row with four tricuspidate teeth; one to three tricuspidate teeth on maxilla; dentary with four anteriormost teeth larger, tri- to pentacuspidate. Lateral line incomplete with eight to ten perforated scales; longitudinal series with 32 or 33 scales; six hor- izontal scale rows above lateral line; three horizontal scale rows below lateral line. Overall body coloration silver to yellowish; silver midlateral stripe from ante- rior margin of opercle faint to caudal peduncle; caudal peduncle with a black lozenge-shaped spot extending to first half of middle caudal-fin rays; distal margin of both caudal-fin lobes black, except for their tips; dorsal por- tion of eyes orange; fins yellowish to reddish.
Remarks.
The specimens did not present a complete lateral line, as observed in the original description (
Benine et al. 2004
). However,
Vanegas-Ríos et al. (2019)
analyzed populations of
M. bonita
from the Bermejo, Paraná,
Paraguay
, and
Uruguay
basins and determined that observed differences in body shape and complete- ness of lateral line are intraspecific variations.
Hemigrammus marginatus
Ellis, 1911
was the name used for the specimens from upper rio
Paraná
; however,
Ota et al. (2015)
restricted this species to the basin of the rio São Francisco and rivers of northeastern
Brazil
. It is possible specimens of
Hemigrammus marginatus
collected by
Serra et al. (2015)
are
M. bonita
.