Taxonomic review of the Hyphessobrycon panamensis species-group (Characiformes: Characidae)
Author
Ota, Renata R.
Author
Carvalho, Fernando R.
Author
Pavanelli, Carla S.
text
Zootaxa
2020
2020-03-18
4751
3
401
436
journal article
10.11646/zootaxa.4751.3.1
73be5c96-5c26-4eac-8bbd-2648f8d41b4d
1175-5326
3714610
3855BBC8-BB60-4D5F-B96C-0204DDEEBA68
Key to species for the
Hyphessobrycon panamensis
species-group
1. Presence of a silvery-blue iridescent coloration on dorsal region of flanks in life; body depth 46.0–50.3% SL.....................................................................................................
H. columbianus
1’. Absence of a silvery-blue iridescent coloration on dorsal region of flank in life; body depth 31.8–46.5% SL.............. 2
2. Two humeral blotches equally pigmented, extending two to four longitudinal scale rows below lateral line, with contours and margins always well-defined.....................................................................
H. savagei
2’. Two humeral blotches, the second one less conspicuous than the first, extending up to two longitudinal scale rows below lateral line, with posterior margin as a concentration of melanophores concentrated along longitudinal midlateral stripe; or only one diffuse humeral blotch, in
H. daguae
...................................................................... 3
3. Branched anal-fin rays 19–23 (modes = 21 and 22);...............................................
H. panamensis
3’. Branched anal-fin rays 23–27, rarely 22 (modes = 24 and 25).................................................. 4
4. Single diffuse humeral blotch; lateral line frequently disrupted..........................................
H. daguae
4. Two humeral blotches, the first one well defined; lateral line incompletely pored (rarely disrupted in
H. condotensis
)...... 5
5. Epibranchial 1 with 5–7 (mode = 7) gill rakers; dorsal-fin length 27.7–29.7% SL, and pelvic-fin length 17.3–20.5% SL in ma- ture males................................................................................
H. condotensis
5’. Epibranchial 1 with 8–9, rarely 7 (mode = 8) gill rakers; dorsal-fin length 27.8–41.2% SL, and pelvic-fin length 20.4–24.5% SL in mature males.................................................................
H. bussingi
,
new species