A new species of Pachyurus Agassiz 1831 (Teleostei: Perciformes: Sciaenidae) from the Río Napo basin, Eastern Ecuador

Zootaxa ◽  
2002 ◽  
Vol 38 (1) ◽  
pp. 1 ◽  
Author(s):  
LILIAN CASATTI ◽  
NING LABBISH CHAO
Keyword(s):  
New Species ◽  
Lateral Surface ◽  
The Body ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Longitudinal Stripe ◽  
Dorsal Fin ◽  
Coloration Pattern ◽  
A New Species

A new species of Neotropical freshwater sciaenid, Pachyurus stewarti, is described from the Río Napo basin, Ecuador. The new species is readily distinguishable from its congeners by having a unique coloration pattern of about twelve brownish vertical oval blotches and bars on the lateral surface of the body from the opercle to the caudal peduncle, and a longitudinal stripe which starts below the soft dorsal-fin base and extends along the mid-line of the caudal peduncle to the base of the caudal fin.

Hemiodus jatuarana, a new species of Hemiodontidae from the rio Trombetas, Amazon Basin, Brazil (Teleostei, Characiformes)

Zootaxa ◽  
2004 ◽  
Vol 546 (1) ◽  
pp. 1 ◽  
Author(s):  
FRANCISCO LANGEANI
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Branchial Arch ◽  
The Body ◽  
Dark Spot ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Dark Pigmentation ◽  
A New Species

Hemiodus jatuarana, a new species of the Hemiodontidae from Oriximin , rio Trombetas, Amazon Basin, Brazil, is described. The new species can be readily distinguished from its congeners by the presence of a horizontally elongated dark spot on the caudal peduncle, and by the absence of any other dark pigmentation pattern on the body. Hemiodus jatuarana is readily separated from H. immaculatus, another species without dark pigmentation on the body, by having 25 27 epibranchial and 36 37 ceratobranchial gill rakers on the first branchial arch, and caudal-fin lobes without longitudinal stripes, vs. 14 16 and 21 25 gill rakers, and a conspicuous longitudinal stripe on each caudal-fin lobe in H. immaculatus. The new species is only known from its type-locality, where it cooccurs with H. immaculatus.

A new species of Pimelodella Eigenmann & Eigenmann, 1888 (Siluriformes: Heptapteridae) from the Orinoco River basin

Zootaxa ◽  
2020 ◽  
Vol 4808 (3) ◽  
pp. 491-506
Author(s):  
MIGUEL ÁNGEL CORTÉS-HERNÁNDEZ ◽  
CARLOS DONASCIMIENTO ◽  
HERNANDO RAMÍREZ-GIL
Keyword(s):  
New Species ◽  
River Basin ◽  
Taxonomic Status ◽  
Dorsal Lobe ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Orinoco River ◽  
Dorsal Fin ◽  
Adipose Fin ◽  
A New Species

A new species of Pimelodella is described from western Andean tributaries of the Orinoco River basin. The new species differs from all congeners by a unique set of characters that includes long maxillary barbel, surpassing the dorsal lobe of the caudal fin; relatively short adipose fin (32.8–36.4 of SL); 40–42 total vertebrae; posterior margin of pectoral-fin spine with 12–18 retrorse dentations along basal two thirds; laterosensory canal foramina of dentary and preopercle large and externally conspicuous; a brown faint and narrow midlateral stripe extending from the pseudotympanum, fading posteriorly along the caudal peduncle, and ending as a spot at the caudal-fin base; and dorsal-fin base darkly pigmented, from spinelet to posteriormost interradial membrane. Taxonomic status of P. pallida and presence of P. cruxenti in Colombia are also discussed. 

scholarly journals A new species of Moenkhausia Eigenmann (Characiformes: Characidae) from the upper rio Machado at Chapada dos Parecis, rio Madeira basin, Brazil

2016 ◽  
Vol 14 (1) ◽  
Author(s):  
William M. Ohara ◽  
Manoela M. F. Marinho
Keyword(s):  
New Species ◽  
The Body ◽  
Caudal Peduncle ◽  
Anterior Portion ◽  
Caudal Fin ◽  
Fin Rays ◽  
Blue Eyes ◽  
A New Species ◽  
Rio Madeira

ABSTRACT A new species of Moenkhausia is described from the upper rio Machado at Chapada dos Parecis, rio Madeira basin, Rondônia State, Brazil. Among congeners, the new species is similar to Moenkhausia chlorophthalma, M. cotinho , M. lineomaculata , M. plumbea, and M. petymbuaba by having dark blotches on the anterior portion of the body scales, which are absent in the remaining species of the genus. The new speciesdiffers from aforementioned species by possessing blue eyes in life, 15-18 branched anal-fin rays, and a well-defined, round caudal-peduncle spot that does not reach the upper and lower margins of the caudal peduncle and does not extend to the tip of the middle caudal-fin rays.

scholarly journals Triplophysa pseudostenura, a new nemacheiline loach (Cypriniformes: Balitoridae) from the Yalong River of China

Zootaxa ◽  
2012 ◽  
Vol 3586 (1) ◽  
pp. 272 ◽  
Author(s):  
CHUNLIN HE ◽  
E ZHANG ◽  
ZHAOBIN SONG
Keyword(s):  
New Species ◽  
Yangtze River ◽  
Valid Species ◽  
Posterior Chamber ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
River Drainage ◽  
Dorsal Fin ◽  
A New Species ◽  
Yalong River

A new species of nemacheiline loach, Triplophysa pseudostenura, is described from the Yalong River, a tributary of theupper Yangtze River drainage in China. Previous collectors misidentified the species as T. stenura. Triplophysapseudostenura can be separated from T. stenura and other valid species of Triplophysa by the following combination ofcharacters: body smooth and without scales; head tapering; lips thin and smooth; trunk and caudal peduncle slender,laterally compressed; depth of caudal peduncle tapering posteroventrally approaching caudal fin; posterior chamber of gasbladder reduced or absent; intestine short, forming a zigzag loop posterior to bottom of ‘U’-shaped stomach; insertion of pelvic fins anterior to dorsal-fin origin; caudal fin deeply concave.

scholarly journals Gephyrocharax torresi (Characiformes: Characidae: Stevardiinae), a new species from the río Cascajales basin, río Magdalena system, Colombia

2013 ◽  
Vol 11 (2) ◽  
pp. 275-284 ◽  
Author(s):  
James Anyelo Vanegas-Ríos ◽  
María de las Mercedes Azpelicueta ◽  
Juan Marcos Mirande ◽  
María Dolly García Gonzales
Keyword(s):  
New Species ◽  
The Body ◽  
Pectoral Fin ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Fin Ray ◽  
Fin Rays ◽  
Adipose Fin ◽  
Black Pigmentation ◽  
A New Species

A new species of Gephyrocharax is described from the río Cascajales basin, a tributary of the río La Colorada, río Magdalena system, Colombia. The new species is distinguished from its congeners, exceptG. melanocheir, by the absence of an adipose fin in most specimens and by the possession of a lateral branched pectoral-fin ray in males with a distal fan-shaped structure with minute bony hooks and a dark blotch or a few scattered dark brown chromatophores along its branches. The new species differs from G.melanocheir by the absence of an intense black pigmentation at the base of the anterior five dorsal-fin rays, the number of vertebrae (40-41vs. 38-39), the frontals contacting each other anterior to the epiphyseal bar in adults (vs. the absence of contact), the posterior margin of the mesethmoid straight in its central portion (vs. strongly concave at this point), the pouch scale of mature males reaching caudal-fin ray 11 or the area between caudal-fin rays 11 and 12 (vs. reaching only to caudal-fin ray 10 or the area between caudal-fin rays 9 and 10), the number of minute terminal branches of the lateral branched pectoral-fin ray of mature males (60-88 vs. 28-54), a longer black lateral stripe along the body in males (reaching to the base of the caudal-fin rays vs. reaching the middle of the length of the caudal peduncle), and the snout length (28.3-31.8% HLvs. 22.2-28.0% HL). The diagnosis ofGephyrocharax is modified to include species with the adipose fin variably present

A new species of Hemiodus Müller (Characiformes: Hemiodontidae) from the lower Rio Xingu, Brazil

Zootaxa ◽  
2020 ◽  
Vol 4751 (1) ◽  
pp. 172-180 ◽  
Author(s):  
IVANILZA DA SILVEIRA SILVA ◽  
ACÁCIO FREITAS NOGUEIRA ◽  
ANDRE LUIZ NETTO-FERREIRA ◽  
ALBERTO AKAMA ◽  
GUILHERME MOREIRA DUTRA
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Conservation Status ◽  
Caudal Fin ◽  
Longitudinal Stripe ◽  
Dorsal Fin ◽  
A New Species

A new species of Hemiodus is described from the Rio Xingu basin, Pará, Brazil. It is distinguished from congeners by the combination of presence of a dark longitudinal stripe extending from head to tip of lower caudal-fin lobe, an oblique blotch on dorsal-fin, 9–11 scale rows above lateral line, 58–66 perforated lateral line scales, and 17–20 circumpeduncular scales. Comments on the conservation status of the new species, as well as its relationships among Hemiodus species, are made. 

Apistogramma eremnopyge, a new species of cichlid fish (Teleostei: Cichlidae) from Peru

Zootaxa ◽  
2004 ◽  
Vol 564 (1) ◽  
pp. 1 ◽  
Author(s):  
JONATHAN S. READY ◽  
SVEN O. KULLANDER
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Cichlid Fish ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
A New Species

Apistogramma eremnopyge, new species, is described from the R o Pintuyacu, R o Itaya drainage (Amazon basin) in Peru. Apistogramma eremnopyge is unique in the genus in possessing a dark blotch on the lower caudal peduncle. It is otherwise most similar to A. bitaeniata, with males possessing extended dorsal fin lappets, and prolonged rays dorsally and ventrally in the caudal fin.

scholarly journals Physoschistura dikrongensis, a new loach from Arunachal Pradesh, India (Teleostei: Nemacheilidae)

Zootaxa ◽  
2012 ◽  
Vol 3586 (1) ◽  
pp. 249 ◽  
Author(s):  
Y. LOKESHWOR ◽  
W. VISHWANATH
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Body ◽  
Arunachal Pradesh ◽  
Caudal Fin ◽  
Sensory Canal ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Brahmaputra Basin ◽  
A New Species

A new species of nemacheilid, Physoschistura dikrongensis, is described from the Brahmaputra basin in ArunachalPradesh, India. It is easily distinguishable from congeners in having two V-shaped dark brown bars across the caudal fintowards the distal end; 11–15 irregular bars on the body; dark brown mottled markings on the head; 4 simple and 8½branched dorsal-fin rays; 4 simple anal-fin rays; an incomplete lateral line; a forked caudal fin with 8+7 branched rays; a well-developed axillary pelvic lobe; suborbital flap in males, and nine preoperculo-mandibular sensory canal pores.

scholarly journals Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil

2003 ◽  
Vol 1 (1) ◽  
pp. 21-33 ◽  
Author(s):  
Flávio C. T. Lima ◽  
Cristiano R. Moreira
Keyword(s):  
New Species ◽  
Lateral Surface ◽  
Color Pattern ◽  
The Body ◽  
Ventral Region ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Dark Color ◽  
Three New Species ◽  
Pelvic Fin

Three new species of Hyphessobrycon (Characiformes: Characidae) are described from the upper rio Araguaia basin. Hyphessobrycon langeanii n. sp. is distinguished from all congeners by the presence of a well-defined, round humeral spot, a reticulate color pattern, a broad, horizontally-elongate caudal-peduncle blotch, and a relatively wide, faint midlateral dark stripe. Hyphessobrycon eilyos n. sp. is distinguished from all congeners by the absence of humeral and caudal spots; by the presence of numerous dark chromatophores on the lateral surface of the body, intensely concentrated on the ventral region from the pelvic-fin origin to the end of the caudal-fin base, dorsal, adipose, and caudal fins with carmine red pigmentation in life; and the presence of 7-11 maxillary teeth. Hyphessobrycon weitzmanorum n. sp. is distinguished from all congeners by the combination of the possession of two humeral spots and a general dark color pattern. These three new species, along with Creagrutus molinus (Characidae), Apareiodon tigrinus (Parodontidae), Aspidoras velites (Callichthyidae), an undescribed member of the Hypoptopomatinae (Loricariidae), Cnesterodon septentrionalis (Poeciliidae), and Simpsonichthys cholopteryx (Rivulidae), all of which are apparently endemic of the upper rio Araguaia, indicate that this area is a previously unrecognized area of endemism.

Botia udomritthiruji, a new species of botiid loach from southern Myanmar (Teleostei: Botiidae)

Zootaxa ◽  
2007 ◽  
Vol 1608 (1) ◽  
pp. 41-49 ◽  
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Color Pattern ◽  
The Body ◽  
Central Portion ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Vertical Bars ◽  
A New Species

Botia udomritthiruji sp. nov. is described from the Tenasserim River drainage in southern Myanmar. It can be distinguished from congeners by its color pattern, consisting of five dark vertical bars on the body, with the central portion of these bars paler than its edges; with increasing age, the edges of these bars become more irregular and darker, and irregular dark spots on the pale interspaces begin to form, sometimes fusing with the edges of the vertical bars. In morphology, it differs from congeners by a combination of: body depth at anus 23.4–27.7% SL, caudal peduncle depth 15.9– 18.7% SL, and 12 dorsal-fin rays. Evidence for considering B. macrolineata a junior synonym of B. dario and for considering B. rostrata a species distinct from B. almorhae is also presented here.

Sign in / Sign up

Export Citation Format

Share Document