scholarly journals A new species of Poptella (Characiformes: Characidae: Stethaprioninae) from the Rio Juma, Rio Madeira basin, Brazil

2019 ◽  
Vol 17 (2) ◽  
Author(s):  
James R. Garcia-Ayala ◽  
Ricardo C. Benine
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Lower Number ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Rio Madeira

ABSTRACT A new species of Poptella is described from the Rio Juma, a tributary of the lower Rio Aripuanã, Rio Madeira basin, Amazonas, Brazil. The new species is distinguished from all congeners, except P. brevispina, by having a lower number of scale rows between the lateral line and dorsal-fin origin (7 vs. 8-10). The new species can be readily distinguished from P. brevispina by the lower number of branched dorsal-fin rays (9 vs. 10). This is the first description of a new species of Poptella since the revisionary study of the Stethaprioninae, published 30 years ago.

A new species of Brachychalcinus (Characiformes: Characidae) from the rio Xingu basin, Serra do Cachimbo, Brazil

Zootaxa ◽  
2017 ◽  
Vol 4362 (4) ◽  
pp. 564 ◽  
Author(s):  
JAMES R. GARCIA-AYALA ◽  
WILLIAN M. OHARA ◽  
MURILO N. L. PASTANA ◽  
RICARDO C. BENINE
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Lower Number ◽  
Entire Body ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

Brachychalcinus reisi, a new species of characid fish, is described from the rio Curuá, tributary of rio Iriri, rio Xingu basin, Serra do Cachimbo, Pará State, Brazil. The new species can be distinguished from its congeners by the presence of a series of longitudinal black wavy stripes on the entire body and by a lower number of longitudinal scale rows between dorsal-fin origin and lateral line (7–8 vs. 8–12). Additionally, the new species differs from B. copei, B. parnaibae, and B. retrospina by the lower number of branched dorsal-fin rays (9 vs.10). This is the first description of a new species of the subfamily since the revisionary study of Stethaprioninae, published almost 30 years ago. 

A new species of Microcharacidium (Characiformes: Crenuchidae) from the Central Amazon, Brazil

2021 ◽  
pp. 57-61
Author(s):  
L.S. Vieira ◽  
A.L. Netto-Ferreira
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Identification Key ◽  
Central Amazon ◽  
Dorsal Fin ◽  
Rio Negro ◽  
Fin Rays ◽  
A New Species ◽  
Rio Madeira

A new species (Microcharacidium bombioides sp. nov.) of the genus Microcharacidium Buckup, 1993 is described from the Rio Negro, Rio Trombetas, Rio Tapajós, tributaries of the Rio Madeira, and the middle Rio Amazonas. The new species is promptly distinguished from all congeners (Microcharacidium eleotrioides (Géry, 1960), Microcharacidium gnomus Buckup, 1993, and Microcharacidium weitzmani Buckup, 1993) by the presence of 12 circumpeduncular scales, 19 precaudal vertebrae, and 7 dark bars on the flanks connected to their contralateral parts both dorsally and ventrally; 2 short, dark suborbital stripes; all teeth on both jaws conical; 10–11 total dorsal-fin rays; and 3–4 perforated lateral line scales. An updated identification key for the genus is provided and the affinities of the new species with other Microcharacidium are discussed.

Devario anomalus, a new species of freshwater fish from Bangladesh (Ostariophysi: Cyprinidae)

Zootaxa ◽  
2009 ◽  
Vol 2136 (1) ◽  
pp. 49-58 ◽  
Author(s):  
KEVIN W. CONWAY ◽  
RICHARD L. MAYDEN ◽  
KEVIN L. TANG
Keyword(s):  
New Species ◽  
Freshwater Fish ◽  
Lateral Line ◽  
Lower Number ◽  
Colour Pattern ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

Devario anomalus, new species, is described from a small coastal stream south of Cox’s Bazar, Chittagong Division, Bangladesh. The new species can be distinguished from all other species of Devario by its unique colour pattern. It is further distinguished from all congeners reported from Bangladesh by a combination of characters, including its shorter P-stripe, the presence of maxillary barbels, an ascending process on the first infraorbital, and a lower number of lateral-line scales, branched dorsal-fin rays, branched anal-fin rays, and circumpeduncular scale rows.

Nandus prolixus, a new species of leaf fish from northeastern Borneo (Teleostei: Perciformes: Nandidae)

Zootaxa ◽  
2006 ◽  
Vol 1328 (1) ◽  
pp. 51 ◽  
Author(s):  
PROSANTA CHAKRABARTY ◽  
RONALD G. OLDFIELD ◽  
HEOK H. NG
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Slender Body ◽  
Dark Spot ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

Nandus prolixus sp. nov. is described from the Sepilok River drainage in Sabah, northeastern Borneo. This species is distinguished from its only Sundaic southeastern Asian congener, N. nebulosus, in having a longer, more produced snout (25.7–30.6% HL vs. 18.5–26.1), more lateralline scales (33–37 vs. 24–34), more scales below the lateral line (12 vs. 10–11), fewer spines in the dorsal fin (XIV vs. XV–XVI), and fewer pectoral-fin rays (15–16 vs. 17–19). It differs from N. nandus (from India) in having fewer lateral-line scales (33–37 vs. 42–55), fewer scales above the lateral line (4–5 vs. 6–7), fewer scales below the lateral line (12 vs. 14–18), more dorsal spines (XIV vs. XII–XIII), and the absence (vs. presence) of a distinct dark spot at the base of the caudal peduncle. It differs from N. oxyrhynchus (from mainland southeastern Asia) in having a more slender body (body depth 37.6–40.5% SL vs. 41.3–44.1) and a less steeply sloping predorsal profile.

Hyphessobrycon oritoensis (Characiformes: Characidae), a new species from the Putumayo River drainage, Colombian Amazon

Zootaxa ◽  
2008 ◽  
Vol 1813 (1) ◽  
pp. 42 ◽  
Author(s):  
CARLOS A. GARCÍA-ALZATE ◽  
CÉSAR ROMÁN-VALENCIA ◽  
DONALD C. TAPHORN
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Posterior Border ◽  
Caudal Fin ◽  
River Drainage ◽  
Lateral Band ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Colombian Amazon ◽  
A New Species

Hyphessobrycon oritoensis (Characiformes: Characidae) is described from the Putumayo River drainage of the Colombian Amazon. The new species belongs to the H. heterorhabdus group and is distinguished from all other known species by the following combination of characters: iii,8 dorsal–fin rays, iv, 26–27 anal–fin rays, 19 teeth on dentary, 35 scales in longitudinal series, 10–11 perforated scales in lateral line, 7 scales between lateral line and dorsal–fin origin, 14 predorsal scales and a dark lateral band that extends from the posterior border of the humeral spot to the tips of the middle caudal fin rays.

scholarly journals A new species of Boehlkea (Characiformes: Characidae: Stevardiinae) from the rio Japurá, Amazon basin, Brazil

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Isabel M. Soares ◽  
Vinicius A. Bertaco ◽  
Priscila Madoka M. Ito ◽  
Jansen Zuanon
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Amazon Basin ◽  
Color Pattern ◽  
Distal Portion ◽  
Lower Number ◽  
Dorsal Fin ◽  
Basal Half ◽  
A New Species ◽  
Pelvic Fin

ABSTRACT A new species of Boehlkea is described from rio Japurá, Amazon basin. The new species differs from B. fredcochui by the presence of a vertically elongate humeral spot (vs. absence), complete lateral line (vs. incomplete), four rows of scales below lateral line (vs. three), and lower number of branched anal-fin rays (17-21 vs. 22-25), and from B. orcesi by the higher number of maxillary teeth (13-14 vs. 5-12), greater head length (27.9-29.9% vs. 24.3-27.5% of SL), and by the color pattern (basal half of dorsal-fin, distal portion of pelvic-fin, lower caudal-fin lobe and anal-fin with black chromatophores vs. absence of black chromatophores in the fins).

A new species of Creagrutus Günther (Characidae: Stevardiinae) from the Amazonian Piedmont of Colombia

Zootaxa ◽  
2020 ◽  
Vol 4755 (2) ◽  
pp. 365-374
Author(s):  
JUAN G. ALBORNOZ-GARZÓN ◽  
ASTRID ACOSTA-SANTOS ◽  
JUAN D. BOGOTÁ-GREGORY ◽  
EDWIN AGUDELO-CÓRDOBA
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Unique Combination ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Phylogenetic Framework ◽  
A New Species ◽  
Piedmont Region

A new species of Creagrutus is described from the Amazonian Piedmont, Colombia. The new species can be distinguished from congeners by presenting the following unique combination of characters: a dark mid-lateral stripe starting at anteriormost scale of lateral line, a vertically elongated humeral blotch, absence of dark blotches on dorsal fin and at base of middle caudal-fin rays, a triangular dentigerous surface of the premaxilla, 5–6 dentary teeth, and 11–12 predorsal scales. Comparisons with congeners distributed in the piedmont region of Río Caquetá basin are presented and its relationships among species of Creagrutus is inferred from the available phylogenetic framework. 

scholarly journals A new species of Tyttocharax (Characiformes: Characidae: Stevardiinae) from the Güejar river, Orinoco river Basin, Colombia

2012 ◽  
Vol 10 (3) ◽  
pp. 519-525 ◽  
Author(s):  
César Román-Valencia ◽  
Carlos A. García-Alzate ◽  
Raquel I Ruiz-C ◽  
C Donald ◽  
B Taphorn
Keyword(s):  
New Species ◽  
Lateral Line ◽  
River System ◽  
First Record ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Adipose Fin ◽  
A New Species ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

A new Tyttocharax species from the Güejar River system, near the Macarena Mountains in Colombia is described. This is the first record for the genus from the Orinoco basin. The combination of the following characters distinguish Tyttocharax metae from its congeners: presence of bony hooks on the pectoral and caudal-fin rays; bony hooks on the anal-fin rays larger than those on the pelvic-fin rays; pectoral-fin rays i,5-6,i; presence of three unbranched dorsal-fin rays; absence of an adipose fin; four scales rows between the anal-fin origin and the lateral line; and four scale rows between the pelvic-fin and the lateral line. Ecological characteristics of the habitat of the new species are also presented.

scholarly journals Channa pardalis, a new species of snakehead (Teleostei: Channidae) from Meghalaya, northeastern India

2016 ◽  
Vol 8 (3) ◽  
pp. 8583 ◽  
Author(s):  
J.D. Marcus Knight
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Body ◽  
Colour Pattern ◽  
Northeastern India ◽  
Dorsal Fin ◽  
Black Spots ◽  
Fin Rays ◽  
Orbital Region ◽  
A New Species

Channa pardalis, a new species of snakehead, is described from Khasi Hills, Meghalaya, northeastern India.  This species can be distinguished from its congeners by a unique colour pattern consisting of numerous large black spots on the post-orbital region of the head, opercle and body; a broad white and black margin to the dorsal, anal and caudal fins; 36–37 dorsal fin rays; 24–25 anal fin rays; 44–45 pored scales on the body and two scales on the caudal fin base; 4½ scales above lateral line and 6½ scales below lateral line; 45 vertebrae and the palatine with two rows of teeth: outer row with numerous minute teeth and inner row with short, stout inward curved teeth.  

scholarly journals A new species of Gladioglanis Ferraris & Mago-Leccia from rio Aripuanã, Amazonas, Brazil (Siluriformes: Heptapteridae)

2008 ◽  
Vol 6 (3) ◽  
pp. 433-438 ◽  
Author(s):  
Marcelo Salles Rocha ◽  
Renildo Ribeiro de Oliveira ◽  
Lúcia H. Rapp Py-Daniel
Keyword(s):  
New Species ◽  
Dorsal View ◽  
Neural Spine ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Anterior Side ◽  
Fin Rays ◽  
A New Species ◽  
Rio Madeira ◽  
Single Locality

A new species of Gladioglanis is described from a single locality on rio Aripuanã, rio Madeira basin, and can be distinguished from its congeners by the following characters: dorsal-fin spine and spinelet absent, first dorsal-fin ray flexible, unbranched, followed by five branched dorsal-fin rays, pectoral-fin spine short and with few (5 anterior-side, 4 posterior-side) dentations, 22-25 anal-fin rays, round profile of the head in dorsal view, first dorsal-fin pterygiophore in contact with the neural spine of eighth vertebrae, 13 caudal-fin rays in both upper and lower lobes, and 60 total vertebrae. Some of its characters are discussed below and compared among the species of a small clade within Heptapteridae proposed by Bockmann (1998).

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