A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru

Zootaxa ◽  
2020 ◽  
Vol 4820 (2) ◽  
pp. 323-336
Author(s):  
DARIO R. FAUSTINO-FUSTER ◽  
HERNÁN ORTEGA
Keyword(s):  
New Species ◽  
River Basin ◽  
Morphological Analysis ◽  
Valid Species ◽  
Amazon River ◽  
Freshwater Species ◽  
X Rays ◽  
Amazon River Basin ◽  
A New Species ◽  
Pelvic Fin

Mastiglanis is a genus of heptapterid catfish represented by two valid species. These freshwater species are widely distributed along the Amazon, Orinoco, and Maroni River basins. However, a taxonomic review of specimens collected in the Putumayo and Nanay rivers, Amazon River basin in Peru revealed a new species of Mastiglanis. A morphological analysis was completed for morphometric (36 measurements) and meristic (20 counts) data. Osteological counts and descriptions were made from clear and stained specimens and x-rays images. The new species of Mastiglanis differs from M. asopos and M. durantoni by having a long pelvic fin, short snout, eight branched anal-fin rays, and a higher number of vertebrae and gill rakers. The distribution of the new species is restricted to the upper Amazon River basin.

A new species of Hemigrammus (Characiformes: Characidae) from western Amazon River basin, Colombia

2019 ◽  
Author(s):  
Juan G. Albornoz‐Garzón ◽  
Alejandro Méndez‐López ◽  
Carlos DoNascimiento ◽  
Flávio C. T. Lima
Keyword(s):  
New Species ◽  
River Basin ◽  
Amazon River ◽  
Amazon River Basin ◽  
A New Species

scholarly journals A new species of Acestridium Haseman, 1911 (Loricariidae: Hypoptopomatinae) from the Eastern Amazon basin, Brazil

2007 ◽  
Vol 5 (4) ◽  
pp. 429-434 ◽  
Author(s):  
Mónica S. Rodriguez ◽  
Roberto E. Reis
Keyword(s):  
New Species ◽  
River Basin ◽  
Amazon Basin ◽  
Amazon River ◽  
Amazon River Basin ◽  
A New Species

Acestridium triplax, new species, is described from the Amazon River basin in Pará State, Brazil. The new species can be distinguished from all its congeners by having one series of middle abdominal plates between the lateral abdominal plates (vs no abdominal plates between the lateral abdominal plates).

Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin

Zootaxa ◽  
2018 ◽  
Vol 4527 (2) ◽  
pp. 211
Author(s):  
FRANCISCO PROVENZANO R. ◽  
RAMIRO BARRIGA-SALAZAR
Keyword(s):  
New Species ◽  
River Basin ◽  
The Other ◽  
Amazon River ◽  
Amazon River Basin ◽  
Freshwater Systems ◽  
The Pacific ◽  
Coloration Pattern ◽  
Fish Collection ◽  
A New Species

To elucidate the species of the genus Ancistrus that inhabit freshwater systems of Ecuador, cataloged lots of the Fish Collection, Museo de la Escuela Politécnica Nacional (MEPN), in Quito, were analyzed. Four species were identified: Ancistrus alga (Cope, 1872), A. malacops (Cope, 1872), A. clementinae Rendahl, 1937, and a new species that herein is described. Ancistrus clementinae inhabits aquatic systems of the Pacific slope, mostly in the Guayas River drainage. The other three species live in freshwater systems that drain to the Amazon River Basin. Ancistrus alga inhabit the northern and central portions of eastern Ecuador. Ancistrus malacops has a broad distribution from north to south, but is absent from the Santiago River. Both species occasionally live in sympatry. The new species is restricted to the Santiago River, in Morona-Santiago province. Each species has unique external morphological features and/or a coloration pattern that allow unambiguous identification, at least of males. This paper provides a description of the new species, and a re-description and images of the other three. 

scholarly journals A new miniature species of Priocharax (Characiformes: Characidae) from the upper rio Ipixuna, Purus drainage, Brazil

2021 ◽  
Vol 19 (2) ◽  
Author(s):  
George Mendes Taliaferro Mattox ◽  
Camila da Silva de Souza ◽  
Mônica Toledo-Piza ◽  
Claudio Oliveira
Keyword(s):  
New Species ◽  
Lower Number ◽  
Valid Species ◽  
Molecular Evidence ◽  
Evidence Based ◽  
Fin Rays ◽  
Coi Sequences ◽  
Amazonas State ◽  
A New Species ◽  
Pelvic Fin

Abstract A new species of miniature fish of the characid genus Priocharax is described from a small lake near the rio Ipixuna, rio Purus drainage, Amazonas State, Brazil. It is distinguished from all congeners except P. pygmaeus by the lower number of teeth on the maxilla and dentary. It differs from P. pygmaeus by the presence of two postcleithra and 22–27 branched anal-fin rays (vs absence and 19–22). The new species is further distinguished from other species of Priocharax by a combination of characters involving the number of pelvic-fin rays and branched anal-fin rays, the number of postcleithra, the shape of postcleithrum 3, and the absence of the claustrum. Molecular evidence based on COI sequences of all valid species of Priocharax also corroborates the validity of this new species.

Luciobarbus kottelati, a new species of barbel (Teleostei: Cyprinidae) from the Buyuk Menderes River, Turkey, with rediagnose of L. lydianus

Zootaxa ◽  
2008 ◽  
Vol 1824 (1) ◽  
pp. 35 ◽  
Author(s):  
DAVUT TURAN ◽  
F. GÜLER EKMEKÇİ ◽  
ALİ İLHAN ◽  
SEMİH ENGİN
Keyword(s):  
New Species ◽  
Aegean Sea ◽  
Valid Species ◽  
Western Anatolia ◽  
Dorsal Fin ◽  
Büyük Menderes River ◽  
A New Species ◽  
Pelvic Fin

Luciobarbus kottelati, new species, is described from the River Büyük Menderes, Aegean Sea drainage, Turkey. It is distinguished from all other species of Luciobarbus in Europe and western Anatolia by the pelvic-fin origin markedly in front of the dorsal-fin origin (vs. behind). Luciobarbus lydianus, considered to be a synonym of L. pectoralis by most recent authors is a valid species and is rediagnosed.

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