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 New species of Cyphocharax (Characiformes: Curimatidae) from the upper rio Negro, Amazon basin

2014 ◽  
Vol 12 (2) ◽  
pp. 327-332 ◽  
Author(s):  
Bruno F. Melo ◽  
Richard P. Vari
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Rio Negro ◽  
Fin Rays ◽  
Dark Pigmentation ◽  
Northern Brazil ◽  
Adipose Fin ◽  
A New Species

A new species of Cyphocharax, Curimatidae, apparently endemic to the blackwater upper rio Negro of the Amazon basin in northern Brazil, is described.The new species is readily distinguished from its congeners by the presence of a distinctly longitudinally elongate, posteriorly vertically expanding patch of dark pigmentation along the midlateral surface of the caudal peduncle, with the patch extending from the base of the middle caudal-fin rays anteriorly past the vertical through the posterior terminus of the adipose fin. The new species additionally differs from all congeners in details of body and fin pigmentation and meristic and morphometric ratios. Evidence for the assignment of the species to Cyphocharax and the occurrence of other species of the Curimatidae apparently endemic to the upper rio Negro catchment is discussed.

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 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 Corydoras ortegai, a new species of corydoradine catfish from the lower río Putumayo in Peru (Ostariophysi: Siluriformes: Callichthyidae)

2007 ◽  
Vol 5 (3) ◽  
pp. 293-300 ◽  
Author(s):  
Marcelo R. Britto ◽  
Flávio C. T. Lima ◽  
Max H. Hidalgo
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Distribution Patterns ◽  
Sister Species ◽  
Similar Distribution ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
Lateral Body ◽  
Adipose Fin ◽  
A New Species

A new species of Corydoras, C. ortegai, is described from tributaries of the lower course of río Putumayo in Peru, close to the border with Brazil and Colombia. The new species seems to be related to Corydoras reynoldsi, C. weitzmani, C. panda, and C. tukano, all of which share a pattern composed of uniform light ground color on body, dark bar ("mask") across orbit, and one or two large rounded blotches midlaterally on trunk. Corydoras ortegai is easily distinguished from these species, except C. panda, mainly by the absence of a midlateral trunk blotch at the dorsal-fin level, and the rounded shape of the midlateral trunk blotch at the adipose-fin level. Corydoras ortegai differs from C. panda by its greater number of lateral body plates, lack of dorsal-fin blotch, scattered chromatophores surrounding midregion of cleithrum, caudal fin with series of small blotches restricted to rays, slenderer body, and narrower intercleithral area. Corydoras ortegai belongs to a putatively monophyletic assemblage of Corydoras that occurs mainly in the Western Amazon basin, C. tukano excepted. The occurrence of Corydoras tukano in the rio Tiquié (upper Negro basin) and its putative sister species, C. ortegai, in the western Amazon, together with similar distribution patterns shared by other groups of fishes, suggest a biogeographic relationship between these areas.

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.

Description of a new species of the fish genus Acanthoplesiops Regan (Teleostei: Plesiopidae: Acanthoclininae) from Tonga

Zootaxa ◽  
2004 ◽  
Vol 432 (1) ◽  
pp. 1 ◽  
Author(s):  
RANDALL D. MOOI ◽  
ANTHONY C. GILL
Keyword(s):  
New Species ◽  
Dorsal Spine ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Lower Lip ◽  
Dorsal Fin ◽  
Anterior Dorsal ◽  
Fin Rays ◽  
Pale Spot ◽  
A New Species

Acanthoplesiops naka sp. n. is described from the 9.9 mm SL holotype collected at Ofolanga Island of the Ha apai Group of Tonga. Its dorsal-fin spine count of XVIII is unique in the genus. The following combination of characters also distinguishes it from congeners: first two dorsal-fin pterygiophores in the 3 rd interneural space (anterior dorsal-fin formula ?/?/I+I/I/I/I/I//I/I/I); 3 dentary pores; 2 intertemporal pores; head and body generally brownish with darker pigment spots (from shrunken melanophores), excepting a paler stripe from the anterior half of the symphyseal flap on the lower lip to the origin of the dorsal fin (continuing on to the first dorsal spine), a pale spot on the pectoralfin base, and a pale caudal peduncle continuous with pale bases of last 3 segmented dorsaland anal-fin rays; regular ctenoid scales; no membranous attachment of last dorsalor anal-fin rays to caudal fin. The new species might be the sister taxon to A. psilogaster as they share the putative derived character of two dorsal-fin pterygiophores in the 3 rd interneural space.

scholarly journals Microglanis carlae, a new species of bumblebee catfish (Siluriformes: Pseudopimelodidae) from the río Paraguay basin in Paraguay

2008 ◽  
Vol 6 (3) ◽  
pp. 425-432 ◽  
Author(s):  
Héctor S. Vera Alcaraz ◽  
Weferson J. da Graça ◽  
Oscar A. Shibatta
Keyword(s):  
New Species ◽  
Species Complex ◽  
Anterior Margin ◽  
Color Pattern ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
A New Species

Microglanis carlae, new species, is described from the río Paraguay basin and distinguished from its congeners by the following combination of characters: paired and anal fins mottled or with thin faint bands, trunk with dark-brown saddles, anterior margin of pectoral spine with serrations retrorse proximally and antrorse distally, tip of pectoral spine as a distinct bony point, continuous portion of lateral line reaching vertical through last dorsal-fin ray, caudal peduncle with irregularly shaped, faint to dark blotch, maxillary barbel surpassing vertical through dorsal-spine origin, and dark bar on posterior flank continuous from base of adipose fin to that of anal fin. The new species is included in the Microglanis parahybae species complex on the basis of color pattern.

scholarly journals A new species of Anchoviella Fowler, 1911 (Clupeiformes: Engraulidae) from the Amazon basin, Brazil

2012 ◽  
Vol 10 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Marina V. Loeb
Keyword(s):  
New Species ◽  
Standard Length ◽  
Posterior Margin ◽  
Amazon Basin ◽  
Head Length ◽  
Estuarine Species ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Upper Jaw ◽  
A New Species

Anchoviella juruasanga is described from the drainages of rios Negro, Madeira, Tapajós, Trombetas, Tocantins, and Jari, in the Amazon basin, Brazil. The new species is distinguished from its congeners by having a short upper jaw, with its posterior tip extending between the verticals through anterior and posterior margins of the pupil (vs. posterior tip of upper jaw extending beyond the vertical through posterior margin of the pupil). Anchoviella juruasanga is also distinct from other strictly freshwater Amazonian species of the genus by the distance from tip of snout to posterior end of upper jaw between 8 and 11% in standard length (vs. 14% or more in A. alleni, A. carrikeri, A. guianensis, and A. jamesi). The anal-fin origin slightly posterior to or at the vertical through the base of the last dorsal-fin ray further distinguishes the new species from A. alleni (anal-fin origin posterior to the vertical through the last anal-fin ray by at least 14% of head length) and A. jamesi (anal-fin origin anterior to the vertical through the last anal-fin ray). An identification key for the Amazonian species of Anchoviella, including marine and estuarine species known to occur in the lower portion of the basin, is presented.

Rhinogobius maculagenys, A new species of freshwater goby (Teleostei: Gobiidae) from Hunan, China

Zootaxa ◽  
2018 ◽  
Vol 4476 (1) ◽  
pp. 118
Author(s):  
QIANQIAN WU ◽  
XUEJIAN DENG ◽  
YANJIE WANG ◽  
YONG LIU
Keyword(s):  
New Species ◽  
Anterior Margin ◽  
Southern China ◽  
Hunan Province ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
Freshwater Goby ◽  
Single Spine ◽  
A New Species ◽  
Bright Blue

A new freshwater goby, Rhinogobius maculagenys sp. nov., was collected from Hunan Province in Southern China. This species can be distinguished from all congeners by a combination of the following features: first dorsal fin with 6 spines; second dorsal fin with a single spine and 7–9 segmented rays; anal fin with a single spine and 6–8 segmented rays; pectoral fin with 16 segmented rays; 32–34 longitudinal scales; 9–13 transverse scales; 11+16=27 vertebrae; pore ω1 missing; head and body yellowish brown; cheek and opercle yellowish brown with over 30 small orange spots, branchiostegal membrane yellow with over 10 small orange spots in males and white and spotless in females; first dorsal fin trapezoidal in males and nearly semicircular in females, with large bright blue blotch in front of second spine; spines 4 and 5 longest, rear tip extending to base of second branched ray of second dorsal fin in males when adpressed, but just reaching or not reaching anterior margin of second dorsal fin in females; caudal fin with 5–6 vertical rows of brown spots; flank with several longitudinal rows of blackish-brown spots; and belly pale white.

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