A new species of Pachycara Zugmayer (Teleostei: Zoarcidae) from off Monterey Bay, California, USA, with comments on two North Pacific Lycenchelys species

Zootaxa ◽  
2012 ◽  
Vol 3559 (1) ◽  
pp. 39 ◽  
Author(s):  
M. ERIC ANDERSON
Keyword(s):  
New Species ◽  
North Pacific ◽  
Fish Fauna ◽  
Lateral Line System ◽  
Monterey Bay ◽  
Adult Males ◽  
Gill Slit ◽  
Line System ◽  
Central California ◽  
A New Species

A new species of the eelpout genus Pachycara Zugmayer is described from the lower bathyal zone of central California,USA on the basis of three adult males. It is distinguished from its congeners mainly by its low vertebral counts, origin ofthe mediolateral branch of the lateral line system, lack of pelvic fins, presence of scales on the nape and cheeks and re-stricted gill slit. In addition, two species of the eelpout genus Lycenchelys Gill (L. micropora and L. monstrosa), taken in the same collection as the new Pachycara, are discussed, with the latter added to the California marine fish fauna.

Schistura larketensis, a new cavernicolous fish (Teleostei: Nemacheilidae) from Meghalaya, Northeast India

Zootaxa ◽  
2017 ◽  
Vol 4353 (1) ◽  
pp. 89
Author(s):  
HRISHIKESH CHOUDHURY ◽  
D. KHLUR B. MUKHIM ◽  
SUDEM BASUMATARY ◽  
DEISAKEE P. WARBAH ◽  
DANDADHAR SARMA
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Ventral Surface ◽  
Northeast India ◽  
Lateral Line System ◽  
Brahmaputra River ◽  
Line System ◽  
Limestone Cave ◽  
A New Species

Schistura larketensis, a new species of cavernicolous loach, is described from Khung, a limestone cave in Meghalaya, India. The species differs from Schistura papulifera, its only troglomorphic congener from northeast India, in having a smooth ventral surface of the head, the presence of a small cylindrical axillary pelvic lobe, and the presence of three pores in the supratemporal canal of the cephalic lateral-line system. Apart from these differences, the species can be immediately distinguished from all other species of Schistura from the Brahmaputra River and neighboring basins by the complete absence (or only vestigial presence) of eyes. 

A new species of Microglanis (Siluriformes, Pseudopimelodidae) from lower Rio Tocantins basin, Pará, Brazil, with description of superficial neuromasts and pores of lateral line system

Zootaxa ◽  
2010 ◽  
Vol 2632 (1) ◽  
pp. 53 ◽  
Author(s):  
WILLIAM BENEDITO GOTTO RUIZ ◽  
OSCAR AKIO SHIBATTA
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Lateral Line ◽  
Lateral Line System ◽  
Caudal Peduncle ◽  
Line System ◽  
A New Species ◽  
Predorsal Distance

Microglanis robustus, new species, is the first Microglanis to be described from the Rio Tocantins basin, Pará, Brazil, and differs from the congeners by the presence of a cordiform blotch in the nape, instead of a transverse light stripe; neuromasts of the superficial lines surrounded by melanophores; robust body with short snout, head and predorsal distance; and deep caudal peduncle. The mapping of superficial neuromasts and cephalic sensory canals evidenced intra and interespecific polymorphisms and, therefore, of little value for phylogenetic analysis within the genus.

Schistura papulifera, a new species of cave loach from Meghalaya, India (Teleostei: Balitoridae)

Zootaxa ◽  
2007 ◽  
Vol 1393 (1) ◽  
pp. 35 ◽  
Author(s):  
MAURICE KOTTELAT ◽  
DANIEL R. HARRIES ◽  
GRAHAM S. PROUDLOVE
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Lower Half ◽  
Lateral Line System ◽  
Line System ◽  
A New Species

Schistura papulifera, new species, is described from a cave of the Synrang Pamiang system, Meghalaya State, India. It is distinguished from all other known species of Schistura in having the lower half of the head covered by small skin projections and 5 pores in the supratemporal canal of the cephalic lateral-line system. In addition, it has a white body and vestigial eyes. The closest epigean relative of S. papulifera has not yet been identified due to the lack of survey and usable data. The identity of the cave nemacheiline from Siju Cave is briefly discussed, but this remains inconclusive, again due to the lack of material and usable data.

Schistura papulifera, a new species of cave loach from Meghalaya, India (Teleostei: Balitoridae)

Zootaxa ◽  
2007 ◽  
Vol 1393 (1) ◽  
pp. 35-44 ◽  
Author(s):  
MAURICE KOTTELAT ◽  
DANIEL R. HARRIES ◽  
GRAHAM S. PROUDLOVE
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Lower Half ◽  
Lateral Line System ◽  
Line System ◽  
A New Species

Schistura papulifera, new species, is described from a cave of the Synrang Pamiang system, Meghalaya State, India. It is distinguished from all other known species of Schistura in having the lower half of the head covered by small skin projections and 5 pores in the supratemporal canal of the cephalic lateral-line system. In addition, it has a white body and vestigial eyes. The closest epigean relative of S. papulifera has not yet been identified due to the lack of survey and usable data. The identity of the cave nemacheiline from Siju Cave is briefly discussed, but this remains inconclusive, again due to the lack of material and usable data.

Etmopterus burgessi sp. nov., a new species of lanternshark (Squaliformes: Etmopteridae) from Taiwan

Zootaxa ◽  
2006 ◽  
Vol 1373 (1) ◽  
pp. 53 ◽  
Author(s):  
JAYNA A.S.-D. SILVA ◽  
DAVID A. EBERT
Keyword(s):  
New Species ◽  
North Pacific ◽  
Western North Pacific ◽  
Gill Slit ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Slit Length ◽  
Peduncle Length ◽  
A New Species ◽  
Distinguishing Character

A new species of lanternshark, Etmopterus burgessi sp. nov., is described from four specimens collected in deepwater off northeastern Taiwan. The new species closely resembles other members of the “Etmopterus lucifer group” in having longitudinal rows of dermal denticles, but can be distinguished from congeners based on the following characters: snout width, gill slit length, caudal peduncle length, second dorsal fin height, the arrangement of flank and caudal markings, tooth morphology, and the presence or absence of dermal denticles. The new species has a broader snout and gill length proportionally longer than other western North Pacific Etmopterus species. Proportionally, E. burgessi has a shorter second dorsal fin height and caudal peduncle length than other Etmopterus species. In addition, both the second dorsal fin and ventral snout surface of E. burgessi have conspicuous dermal denticles. A final distinguishing character of E. burgessi is the flank marking, which resembles E. lucifer.Key-words: Elasmobranchii, Squaliformes, Etmopteridae, Etmopterus, Taiwan

scholarly journals Description of a New Species of Pelagic Eelpout Melanostigma thalassium sp. nova (Zoarcidae) from Walvis Ridge (Southeastern Atlantic) and Identification Key for Species of the Genus from the Atlantic Ocean

2019 ◽  
Vol 59 (5) ◽  
pp. 633-640 ◽  
Author(s):  
M. V. Orlovskaya ◽  
A. V. Balushkin
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Axial Skeleton ◽  
The Other ◽  
Lateral Line System ◽  
Line System ◽  
Walvis Ridge ◽  
A New Species ◽  
Dark Body ◽  
Southeastern Atlantic

Abstract A new species Melanostigma thalassium sp. n. is described from the underwater Walvis Ridge (Southeast Atlantic Ocean). This species differs from the other species of the genus Melanostigma in an original combination of characters based on the structure of the head’s lateral line system (interruption in supratemporal commissure with the loss of medial segments and the absence of pores in the temporal canal) and a nontransparent dark body. In addition, it is different in a range of the count characters in the axial skeleton and fins. A key for identifying the Atlantic species of the genus is provided.

Potamotrygon tigrina, a new species of freshwater stingray from the upper Amazon basin, closely related to Potamotrygon schroederi Fernandez-Yépez, 1958 (Chondrichthyes: Potamotrygonidae)

Zootaxa ◽  
2011 ◽  
Vol 2827 (1) ◽  
pp. 1 ◽  
Author(s):  
MARCELO R. DE CARVALHO ◽  
MARK H. SABAJ PEREZ ◽  
NATHAN R. LOVEJOY
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Conservation Status ◽  
Lateral Line System ◽  
Line System ◽  
Vertebral Centra ◽  
Bright Yellow ◽  
Rio Negro ◽  
Freshwater Stingray ◽  
A New Species

A new species of Neotropical freshwater stingray, family Potamotrygonidae, is described from the Río Nanay in the upper Río Amazonas basin of Peru. Potamotrygon tigrina, n. sp., is easily distinguished from all congeners by its conspicuous dorsal disc coloration, composed of bright yellow to orange vermiculations strongly interwoven with a dark-brown to deep-black background. Additional features that in combination diagnose P. tigrina, n. sp., include the presence of a single angular cartilage, low and not closely grouped dorsal tail spines, and coloration of tail composed of relatively wide and alternating bands of creamy white and dark brown to black. Potamotrygon tigrina is closely related to Potamotrygon schroederi Fernandez-Yépez, 1958, which occurs in the Rio Negro (Brazil) and Río Orinoco (Venezuela, Colombia). Both species are very similar in proportions and counts, and share features hypothesized to be derived within Potamotrygonidae, related to their specific angular cartilage morphology, distal tail color, dorsal tail-spine pattern, and ventral lateral-line system. To further substantiate the description of P. tigrina, n. sp., we provide a redescription of P. schroederi based on material from the Rio Negro (Brazil) and Río Orinoco (Venezuela). Specimens from the two basins differ in number of vertebral centra and slightly in size and frequency of rosettes on dorsal disc, distinctions that presently do not warrant their specific separation. Potamotrygon tigrina is frequently commercialized in the international aquarium trade but virtually nothing is known of its biology or conservation status.

scholarly journals A new species of Moenkhausia (Characiformes: Characidae) from the rio Madeira basin, Brazil, with comments on the evolution and development of the trunk lateral line system in characids

2021 ◽  
Vol 19 (2) ◽  
Author(s):  
Manoela Maria Ferreira Marinho ◽  
Willian Massaharu Ohara ◽  
Fernando Cesar Paiva Dagosta
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Amazon Basin ◽  
Evolutionary Process ◽  
Color Pattern ◽  
Lateral Line System ◽  
Anterior Portion ◽  
Dark Line ◽  
Line System ◽  
A New Species

Abstract A new species of Moenkhausia is described from the rio Machado drainage, Amazon basin, Brazil. It is diagnosed from congeners by its color pattern, consisting of the concentration of chromatophores on the anterior portion of body scales, the horizontally elongate blotch on caudal peduncle, a bright golden coloration of the dorsal portion of eye when alive, and a dark line crossing the eye horizontally. The new species has variable morphology regarding trunk lateral-line canals. Most fully grown individuals do not have enclosed bony tube in many lateral line scales, resembling early developmental stages of tube formation of other species. This paedomorphic condition is interpreted as a result of developmental truncation. Such evolutionary process may have been responsible for the presence of distinct levels of trunk lateral line reductions in small characids. Variation in this feature is common, even between the sides of the same individual. We reassert that the degree of trunk lateral-line tube development must be used with care in taxonomic and phylogenetic studies, because reductions in the laterosensory system may constitute parallel loss in the Characidae. We suggest the new species to be categorized Near Threatened due to the restricted geographical distribution and continuing decline in habitat quality.

scholarly journals A New Species of Snailfishes (Liparidae) of the Genus Careproctus from the Northern Slope of the Aleutin Basin (Bering Sea)

2021 ◽  
Vol 61 (4) ◽  
pp. 487-495
Author(s):  
N. V. Chernova ◽  
E. V. Vedischeva ◽  
A. V. Datskii
Keyword(s):  
New Species ◽  
Bering Sea ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Lower Lobe ◽  
Northwestern Part ◽  
Gill Slit ◽  
Pectoral Fin ◽  
A New Species ◽  
Aleutian Basin

Abstract— A new species of snailfishes Careproctus schmidti sp. nov. from the northwestern part of the Bering Sea is described. The specimen was caught in the mesobenthal of the Aleutian Basin at a depth of 852–862 m (holotype ZIN no. 56 620—female TL 194 mm). It is distinguished from the majority of congeners of the North Pacific Ocean by a set of features: a large number of vertebrae (63) and rays in the fins (D 56, A 50, P 34, C 10), the presence of two pairs of pleural ribs, a relatively elongated (21% SL) pectoral fin with a notch and short lower lobe (12% SL), two suprabranchial pores, simple teeth, naked skin, and black peritoneum. In terms of meristic features, the new species is similar to three North Pacific species, but it differs from C. colletti in a short lower lobe of the pectoral fin, a flattened disc of triangular outlines, and a longer gill slit. It differs from C. roseofuscus by a lower body, a pectoral fin ventrally located and anus which opens immediately behind the disc. It differs from C. ambustus in purple-lilac color, fewer in number simple teeth with sharp apexes, in vertical and higher disposition of gill slit, shorter lower lobe of the pectoral fin, disc shape and position of the anus. The presence of an ovipositor may indicate existence of complicated reproductive behavior (such as carcinophilia or other types of reproductive commensalism). The northwestern slope of the Aleutian Basin, where a specimen of C. schmidti was caught, is located in the zone of influence of the Bering Slope Current and seasonal upwelling associated with the rise of deep waters. The composition of the ichthyocene in the area of ​​capture is given, including up to 20 species, dominated by Macrouridae.

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