A new species of Loricaria (Siluriformes: Loricariidae) from the Turiaçu River basin, Eastern Amazon region, Brazil

Zootaxa ◽  
2021 ◽  
Vol 4915 (3) ◽  
pp. 424-434
Author(s):  
ANANDA CAROLINA S. SARAIVA ◽  
JOÃO MARCELO S. ABREU ◽  
FELIPE POLIVANOV OTTONI ◽  
NIVALDO MAGALHÃES PIORSKI
Keyword(s):  
New Species ◽  
Freshwater Fish ◽  
River Basin ◽  
Standard Length ◽  
Freshwater Fishes ◽  
Amazon Region ◽  
Fish Diversity ◽  
Pectoral Girdle ◽  
Median Region ◽  
A New Species

A new species of Loricaria is herein described from the Turiaçu River basin, Eastern Amazon region, Maranhão state, Brazil, within the Maranhão Hydrological Unit (MHU). Loricaria turi differs from its congeners mainly by the following combination of characters: abdominal plate development confined to the posterior median region, pectoral girdle mostly naked, with cluster of plates near pectoral fin bases; large eyes (minimum orbital diameter 16.2–20.7% of HL and maximum orbital diameter 19.8–24.0% of HL), 214.4 mm of maximum standard length, and large basicaudal plate (16.6–29.2% of HL). The description of this new species strengthens the hypothesis that the Maranhão Hydrological Unit (MHU) is a possible area of endemism for freshwater fishes and contributes to the knowledge of the freshwater fish diversity and composition of the region. 

scholarly journals Aborichthys barapensis, a new species of river loach (Cypriniformes: Nemacheilidae) from Arunachal Pradesh, the eastern Himalaya, India

2021 ◽  
Vol 13 (7) ◽  
pp. 18800-18808
Author(s):  
P. Nanda ◽  
Lakpa Tamang
Keyword(s):  
New Species ◽  
River Basin ◽  
Standard Length ◽  
The State ◽  
Eastern Himalaya ◽  
Arunachal Pradesh ◽  
Brahmaputra River ◽  
Caudal Fin ◽  
A New Species

A new species of nemachilid loach Aborichthys barapensis, is described based on two adult specimens (91 and 97 mm SL) from the Barap Stream (a tributary of the Brahmaputra River basin) in the southeastern most part of the state of Arunachal Pradesh bordering Myanmar. The new species is distinguished from its congeners in having a narrow black basicaudal bar without a black ocellus on the upper end (vs. present); and in having a very low dorsal and ventral adipose crests (vs. prominent; absent in A. waikhomi). The new species is further distinguished from its congeners by the following combination of characters: body with 24–26 oblique bars along the flank; interspace narrower than bars on body; moderately rounded caudal fin with five distinct black to brown cross bars; vent closer to the caudal-fin base (44.1–45.1 % standard length) than to snout tip.

scholarly journals A new species of Farlowella (Siluriformes: Loricariidae) from the upper Bermejo River, La Plata River basin, northwestern Argentina

2019 ◽  
Vol 17 (2) ◽  
Author(s):  
Guillermo E. Terán ◽  
Gustavo A. Ballen ◽  
Felipe Alonso ◽  
Gastón Aguilera ◽  
J. Marcos Mirande
Keyword(s):  
New Species ◽  
River Basin ◽  
Standard Length ◽  
Species Group ◽  
Head Length ◽  
Caudal Fin ◽  
Northwestern Argentina ◽  
La Plata ◽  
A New Species ◽  
Lateral Plates

ABSTRACT A new species of Farlowella is described from the Bermejo River basin, in Salta and Jujuy provinces, northwestern Argentina. The new species belongs to the Farlowella nattereri species group. The new species is diagnosed by the following combination of characters: marbled rostrum, five rows of lateral plates series, relatively short snout (snout-mouth length less than 50.0% of head length), complete half-moon shaped spot on caudal fin, and short predorsal distance (37.8-41.8% of standard length).

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.

scholarly journals Iheringichthys syi (Siluriformes: Pimelodidae), a new pimelodid species from upper Paraná basin, Brazil

2012 ◽  
Vol 10 (1) ◽  
pp. 45-52
Author(s):  
María de las Mercedes Azpelicueta ◽  
Heraldo A. Britski
Keyword(s):  
New Species ◽  
Standard Length ◽  
Anterior Margin ◽  
Head Length ◽  
Dorsal Fin ◽  
Eye Diameter ◽  
Paraná Basin ◽  
Adipose Fin ◽  
Parana Basin ◽  
A New Species

We describe a new species of pimelodid catfish of the genus Iheringichthys from the upper Paraná basin, Brazil. Iheringichthys syi n. sp. is distinguished by the comparatively fine serration along the anterior margin of the pectoral-fin spine, an adpressed dorsal-fin remote from the adipose-fin origin, a large eye (23.2-31.2% of head length), narrow interorbital (16.2-23.0% of head length), long snout (42.0-51.0% of head length), long postorbital length (30.6-34.0% of head length), low adipose fin (4.8-7.8% of standard length), eye diameter 97.0-140.0% of interorbital length, and body with numerous, small dots irregularly scattered on flanks, especially marked on anterior half of flank.

A new species of Lobocheilos (Teleostei: Cyprinidae) from East Kalimantan, Indonesian Borneo

Zootaxa ◽  
2018 ◽  
Vol 4399 (4) ◽  
pp. 543
Author(s):  
PATRICK J. CICCOTTO ◽  
HEOK HUI TAN
Keyword(s):  
New Species ◽  
River Basin ◽  
Scale Height ◽  
Head Length ◽  
Caudal Peduncle ◽  
East Kalimantan ◽  
Mouth Width ◽  
Yellow Stripe ◽  
A New Species

Lobocheilos aurolineatus, new species, is described from the Mahakam River basin in East Kalimantan, Indonesian Borneo. It is distinguished from all other species of Lobocheilos except for L. ixocheilos and L. tenura in having one pair of barbels (maxillary) and by the presence of a broad, black midlateral stripe, approximately ¾ scale height in thickness, extending from the operculum to the caudal-peduncle base. Lobocheilos aurolineatus differs from both species in possessing a thin cream to yellow stripe on the anterior ⅔ of the flank, separating the black midlateral stripe from the brown dorso-lateral scales, and by a smaller mouth width (23.5–29.9% head length in L. aurolineatus vs. 32.1–45.0% and 34.4–46.4% head length in L. ixocheilos and L. tenura, respectively). 

scholarly journals Pleurospermum austriacum (L.) Hoffm. (Apiaceae), a new species in the flora of the Republic of Macedonia

2019 ◽  
Vol 43 (1) ◽  
pp. 113-115
Author(s):  
Aco Teofilovski
Keyword(s):  
New Species ◽  
River Basin ◽  
Native Species ◽  
First Report ◽  
Republic Of Macedonia ◽  
The Republic ◽  
A New Species

Pleurospermum austriacum (Apiaceae) is reported from the Bistrica River basin in the Sar Mountains as a new native species in the flora of the Republic of Macedonia. This is also the first report of the genus Pleurospermum in the country?s flora.

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