scholarly journals A new species of Propimelodus Lundberg & Parisi, 2002 (Siluriformes: Pimelodidae) from rio Araguaia, Mato Grosso, Brazil

2007 ◽  
Vol 5 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Marcelo S. Rocha ◽  
Renildo R. de Oliveira ◽  
Lúcia H. Rapp Py-Daniel
Keyword(s):  
New Species ◽  
Head Length ◽  
Black Dot ◽  
Gill Rakers ◽  
Mato Grosso ◽  
Lateral Process ◽  
Snout Length ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

A new species of Propimelodus from the middle course of the rio Araguaia is described. Propimelodus araguayae, new species, can be distinguished from its congeners in having a conspicuous black dot on the base of the dorsal-fin rays (vs. a different pattern), large eyes (29.7-34.8% of head length and 62.7-74.7% of snout length vs. 14.5-21.1% and 31-44% in P. caesius and 9.5-19.7% and 17-38% in P. eigenmanni), anal-fin lobe present (vs. absent), premaxillary bone with three irregular rows of teeth (vs. 4-5 in P. caesius and 5-8 in P. eigenmanni), tip of anterior lateral process of basipterygium at the same level as the tip of the anterior medial process (vs. anterior lateral process extending beyond the tip of the anterior medial process), total number of vertebrae (43-44 vs. 47-48 in P. caesius and 45-46 in P. eigenmanni) and total number of gill rakers (28-33 vs. 20-23 in P. caesius and 19-20 in P. eigenmanni). This new species is possibly endemic to the middle course of the rio Araguaia.

Syngnathus chihiroe, a new species of pipefish (Syngnathidae) from southern Japan

Zootaxa ◽  
2017 ◽  
Vol 4232 (3) ◽  
pp. 385 ◽  
Author(s):  
MIZUKI MATSUNUMA
Keyword(s):  
New Species ◽  
Head Length ◽  
Northwestern Pacific ◽  
Pectoral Fin ◽  
Snout Length ◽  
Dorsal Fin ◽  
Southern Japan ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

A new species of pipefish, Syngnathus chihiroe sp. nov., (Syngnathidae), is described on the basis of a single specimen collected off Yakushima Island (East China Sea), southern Japan in a depth of 160–162 m. The new species is readily distinguished from all congeners by the combination of the following characters: dorsal-fin rays 38, pectoral-fin rays 17, trunk rings 18, tail rings 40, subdorsal rings 3.25 + 10.0 = 13.25, head length 8.7 in standard length, snout length 2.3 in head length and snout depth 3.7 in snout length. The new species is similar to Syngnathus schlegeli Kaup 1853, the only other northwestern Pacific Ocean congener, characterized by dorsal-fin rays 30–47, trunk rings 18–20 and tail rings 38–46. However, it differs from S. schlegeli in having a greater number of pectoral-fin rays (17 in the former vs. 11–15 in the latter), and a short deep snout (snout length 2.3 in head length and snout depth 3.7 in snout length vs. 1.6–2.0 and 5.6–11.3, respectively). 

scholarly journals A new species of Hyphessobrycon Durbin(Characiformes: Characidae) from the rio Juruena basin, Central Brazil, with notes on H. loweae Costa & Géry

2013 ◽  
Vol 11 (1) ◽  
pp. 33-44 ◽  
Author(s):  
Leonardo F. S. Ingenito ◽  
Flavio C. T. Lima ◽  
Paulo A. Buckup
Keyword(s):  
New Species ◽  
First Record ◽  
Adult Males ◽  
Horizontal Scale ◽  
Mato Grosso ◽  
Central Brazil ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Red Coloration

A new species of Hyphessobrycon, H. peugeoti, is described from the middle portions of the rio Juruena drainage, upper rio Tapajós basin, Mato Grosso State, Brazil. It can be distinguished from all congeners, with the exception of H. loweae and H. heliacus, by a filamentous elongation of the dorsal fin and the approximately straight margin of the anal fin in adult males. It can be distinguished from both H. loweae and H. heliacus by an overall red coloration in life (vs. a golden coloration in life in the latter). Additionally, it can be distinguished from H. heliacus by the lack of chevron-like dark markings along the midline (vs. presence of chevron-like dark-markings in H. heliacus), and from H. loweae by the presence of only five horizontal scale rows between the dorsal-fin origin and the lateral line (vs. 6-7 in H. loweae), and the higher number of branched anal-fin rays (21-24, modally 22, vs. 17-21, modally 20, in H. loweae). Additional meristic, morphometric, and distributional data are provided for Hyphessobrycon loweae, including its first record in the rio Araguaia/Tocantins basin. Comments on a putative monophyletic group including H. peugeoti, H. loweae, H. heliacus, H. elachys, and H. moniliger are presented.

A new species of Eigenmannia Jordan and Evermann (Gymnotiformes: Sternopygidae) from the upper rio Paraguai basin

Zootaxa ◽  
2017 ◽  
Vol 4216 (1) ◽  
pp. 73 ◽  
Author(s):  
RICARDO CAMPOS-DA-PAZ ◽  
IGOR RAPOSO QUEIROZ2
Keyword(s):  
New Species ◽  
Species Group ◽  
Line Number ◽  
Gill Rakers ◽  
Morphometric Characters ◽  
Mato Grosso ◽  
Fin Rays ◽  
Eye Diameter ◽  
Mato Grosso Do Sul ◽  
A New Species

Eigenmannia correntes, a new species belonging to the Eigenmannia trilineata species-group, is described from tributaries of rio Correntes, a major affluent of the rio Piquiri system, upper rio Paraguai basin (Mato Grosso and Mato Grosso do Sul states, Brazil). Eigenmannia correntes is included in the currently poorly defined sternopygid genus Eigenmannia (Ostariophysi: Gymnotiformes) by presenting characters that are either primitive or of uncertain polarity, such as eyes covered by skin, scales present over entire postcranial portion of body, teeth absent from oral valve, infraorbital bones 1+2 with enlarged posterodorsal expansion, and gill rakers short and unossified. The new species is distinguished from all congeners, except those species included in the Eigenmannia trilineata species-group, by the presence of a conspicuous superior midlateral stripe (synapomorphy of this clade). Eigenmannia correntes can be differentiated from all members of the Eigenmannia trilineata species-group, except E. vicentespelaea, E. waiwai and E. besouro, by its subterminal mouth (vs. terminal in remaining species of that group). Further, it differs from these aforementioned species by a number of meristic and morphometric characters, including number of premaxillary and dentary teeth, number of longitudinal series of scales above lateral line, number of pectoral-fin and anal-fin rays, eye diameter, postorbital distance, and snout length. Finally, notes on reproduction and parasitism for E. correntes are presented. 

scholarly journals New species of Metynnis Cope, 1878 (Characiformes: Characidae) from the rio Paraguay basin, Mato Grosso State, Brazil

2009 ◽  
Vol 7 (2) ◽  
pp. 141-146 ◽  
Author(s):  
Carla S. Pavanelli ◽  
Rafaela P. Ota ◽  
Paulo Petry
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Color Pattern ◽  
Head Length ◽  
Gill Rakers ◽  
Mato Grosso ◽  
A New Species

A new species of Metynnis is described from the rio Cuiabá and rio Manso drainages, in the upper rio Paraguay basin, Mato Grosso State, Brazil. This laterally compressed species, which rarely exceeds 140 mm in SL, is readily distinguished from other members of the genus Metynnis by having 100-110 lateral-line scales, 48-56 rows of scales above the lateral line, 32-36 circumpeduncular scales, 22-24 gill rakers, 38 vertebrae, singular color pattern, and relatively smaller snout, width, and head length.

Pomacentrus bangladeshius, a new species of damselfish (Perciformes, Pomacentridae) from Saint Martin’s Island, Bangladesh

Zootaxa ◽  
2020 ◽  
Vol 4860 (3) ◽  
pp. 413-424
Author(s):  
KAZI AHSAN HABIB ◽  
MD JAYEDUL ISLAM ◽  
NAJMUN NAHAR ◽  
AMIT KUMER NEOGI
Keyword(s):  
New Species ◽  
Body Color ◽  
Gill Rakers ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Brown Body ◽  
A New Species ◽  
Yellow Iris ◽  
Pectoral Fin Rays

A new species of damselfish, Pomacentrus bangladeshius, is described from 3 specimens, 67–77 mm standard length (SL), collected from Saint Martin’s Island, Bangladesh. The new species is distinguished from congeners in having the following combination of characters: XIV, 13 dorsal-fin elements; II, 14 anal-fin elements; 19 pectoral-fin rays; 18–19 lateral-line scales; 17–19 gill rakers on first arch; body depth 1.68–1.88 (1.88) in SL; snout 4.17–4.60 (4.17) in head length; head 2.91–3.09 (3.08) in SL; a prominent notch present between preorbital and suborbital; olive to dark brown body color, dark brown premaxilla, and yellow iris with a narrow bronze eye ring. The new species inhabits shallow reef flats around rock and coral outcrops. Phylogenetic analysis also shows the clear divergence of P. bangladeshius from other genetically closely related congeneric species retrieved from GenBank and that it represents a separate lineage. 

A new species of the congrogadin genus Rusichthys from southern Oman (Perciformes; Pseudochromidae), with notes on its osteology

1996 ◽  
Vol 74 (3) ◽  
pp. 581-584 ◽  
Author(s):  
Richard Winterbottom
Keyword(s):  
New Species ◽  
Outer Surface ◽  
Gill Arch ◽  
Colour Pattern ◽  
Gill Rakers ◽  
Caudal Skeleton ◽  
Northern Kenya ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

Three specimens of a distinctive new species of congrogadin belonging to the basal lineage (Rusichthys) of the subfamily are reported here. The new species differs from its congener in having more dorsal-fin and anal-fin rays and more gill rakers on the outer surface of the first gill arch, in colour pattern, and in various osteological details (especially of the caudal skeleton). Rusichthys explicitus n.sp. is presently known from a single collection taken from 27 m off southwest Oman, whereas R. plesiomorphus is presently known from two specimens trawled in 140 m on the Lamu Banks off northern Kenya.

scholarly journals A new species of Moenkhausia Eigenmann (Characiformes: Characidae) from the rio Arinos basin, Brazil

2016 ◽  
Vol 14 (2) ◽  
Author(s):  
Fernando C. P. Dagosta ◽  
Manoela M. F. Marinho
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Black Spot ◽  
Distal Portion ◽  
Mato Grosso ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Dark Pigmentation ◽  
A New Species

ABSTRACT A new species of Moenkhausia is described from the rio Arinos drainage, rio Tapajós basin, Mato Grosso, Brazil. The new species is diagnosed from all congeners, except M . hemigrammoides , M . nigromarginata , and Moenkhausia rubra by having intense diffuse dark pigmentation on the dorsal and anal fin-rays. The new species can be distinguished from the above mentioned species by the combination of 20-23 branched anal-fin rays, presence of a vertically elongate roughly rectangular humeral spot surpassing the lateral line ventrally, absence of a well-defined black spot on the distal portion of the dorsal fin and lack of a series of longitudinal dark zigzag stripes on body. The new species is herein described along with a report and discussion of a possible connection between the rio Tapajós and rio Paraguay basins, near Diamantino Municipality, Mato Grosso.

scholarly journals Hazeus ingressus sp. nov. a new goby species (Perciformes: Gobiidae) and a new invasion in the Mediterranean Sea

2018 ◽  
pp. 316
Author(s):  
SEMIH ENGIN ◽  
HELEN LARSON ◽  
ERHAN IRMAK
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Red Sea ◽  
Undescribed Species ◽  
Gill Rakers ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Goby Species ◽  
The Mediterranean ◽  
A New Species

A new species of gobiid, Hazeus ingressus sp. nov. (Teleostei: Gobiidae) is described from the Levantine coast of Turkey. The species probably originates from the Red Sea and represents the 11th alien gobiid species in the Mediterranean Sea. The new species is distinguished from its Indo-Pacific congeners by a combination of the following characters: no dark blotch on the first dorsal fin; caudal fin coloration; scales in lateral series 25-28 (modally 27); second dorsal fin rays I,8; anal fin rays I,8-9; predorsal scales ctenoid 7; short, stout gill rakers 2+8. This finding suggests that the Lessepsian invasion intensely continues with the inclusion of the known species as well as undescribed species. 

scholarly journals A new species of Pimelodus La Cépède, 1803 (Siluriformes: Pimelodidae) from rio Ribeira de Iguape basin, Brazil

2011 ◽  
Vol 9 (1) ◽  
pp. 127-134 ◽  
Author(s):  
Frank Raynner V Ribeiro ◽  
Carlos Alberto S. de Lucena ◽  
Osvaldo T Oyakawa
Keyword(s):  
New Species ◽  
Dorsal Surface ◽  
Branchial Arch ◽  
The Other ◽  
Gill Rakers ◽  
Caudal Fin ◽  
Fin Rays ◽  
A New Species ◽  
Pelvic Fin

Pimelodus multicratifer, a new species, is described from the rio Ribeira de Iguape basin. The new species differs from the other Pimelodus species by the following features: 26 to 30 gill rakers on the first branchial arch; a combination of three to six rows of dark spots regularly or irregularly scattered on the flanks and several small dark spots irregularly scattered on the dorsal surface of head, supraoccipital process, and sometimes on the dorsal and caudal fins; striated lips; maxillary barbels reaching between posterior tip of the pelvic-fin rays and posterior tip of the middle caudal-fin rays.

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.

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